Retrieve _joindata belongsto association in cakephp 4.4

I could finally save the net_id field in the joindata but now I can’t retreive the nets association with joindata, how do I have to do to solve this issue?
This is the code for index action:

    public function index()
    {
        $this->paginate = [
            'contain' => ['Profiles', 'Referrer', 'Groups']
        ];
		$users = [];
		$usersTable = new UsersTable();
        if ($this->controllerUser['isAdmin'] || $this->controllerUser['isGeneralCoordinator']){
			$users = $this->paginate($usersTable->find('all')->distinct(['Users.id'])->leftJoinWith('Groups')->where(['Users.profile_id IN' => [1,2,3,4,5,6,7]]));
		} else if ($this->controllerUser['isGroupCoordinator']){
            $users = $this->paginate($this->Users->find('search', ['search' => $this->request->getQuery()])->leftJoinWith('Groups')
				->where(['Users.profile_id IN' => [3,4,5,6,7], 'Groups.id in' => $this->controllerUser['group_id']])->group(['Users.id']));
        } else if ($this->controllerUser['isNetCoordinator']){
            $users = $this->paginate($this->Users->find('search', ['search' => $this->request->getQuery()])->leftJoinWith('Groups')
				->where(['Users.profile_id IN' => [4,5,6,7], 'Groups.id' => $this->controllerUser['group_id'], 
				'GroupsUsers.net_id' => $this->controllerUser['net_id']])->group(['Users.id']));
        } else if ($this->controllerUser['isNodeCoordinator']){
            $users = $this->paginate($this->Users->find('search', ['search' => $this->request->getQuery()]))->leftJoinWith('Groups')
				->where(['Users.profile_id IN' => [4,5,6,7], 'Groups.id' => $this->controllerUser['group_id'], 'GroupsUsers.net_id' => $this->controllerUser['net_id'], 
                'GroupsUsers.main_gate' => $this->controllerUser['main_gate']]->group(['Users.id']));
        } else if ($this->controllerUser['isTacticOperator']){
            $users = $this->paginate($this->Users->find('search', ['search' => $this->request->getQuery()]))->leftJoinWith('Groups')
				->where(['Users.profile_id IN' => [4,5,6,7], 'Groups.id' => $this->controllerUser['group_id'], 'GroupsUsers.net_id' => $this->controllerUser['net_id'], 
                'GroupsUsers.main_gate' => $this->controllerUser['main_gate']]->group(['Users.id']));
        } else if ($this->controllerUser['isSanitaryAgent'] ){
            $users = $this->paginate($this->Users->find('search', ['search' => $this->request->getQuery()]))->leftJoinWith('Groups')
				->where(['Users.profile_id IN' => [4,5,6,7], 'Groups.id' => $this->controllerUser['group_id'], 'GroupsUsers.net_id' => $this->controllerUser['net_id'], 
                'GroupsUsers.main_gate' => $this->controllerUser['main_gate']]->group(['Users.id']));
        }
        $this->set(compact('users'));
		$this->set('_serialize', ['users']);
    }

This is the code for index view:

<?php
/**
 * @var \App\View\AppView $this
 * @var iterable<\App\Model\Entity\User> $users
 */
?>
<div class="users index content">
    <?= $this->Html->link(__('New User'), ['action' => 'add'], ['class' => 'button float-right']) ?>
    <h3><?= __('Users') ?></h3>
    <div class="table-responsive">
        <table>
            <thead>
                <tr>
                    <th><?= $this->Paginator->sort('image_file_name_url') ?></th>
                    <th><?= $this->Paginator->sort('username') ?></th>
                    <th><?= $this->Paginator->sort('email') ?></th>
                    <th><?= $this->Paginator->sort('firstname') ?></th>
                    <th><?= $this->Paginator->sort('lastname') ?></th>
                    <th><?= $this->Paginator->sort('created') ?></th>
                    <th><?= $this->Paginator->sort('modified') ?></th>
                    <th><?= $this->Paginator->sort('profile_id') ?></th>
                    <th><?= $this->Paginator->sort('group_id') ?></th>
                    <th><?= $this->Paginator->sort('net_id') ?></th>
                    <th><?= $this->Paginator->sort('main_gate') ?></th>
                    <th><?= $this->Paginator->sort('referrer_id') ?></th>
                    <th><?= $this->Paginator->sort('active') ?></th>
                    <th><?= $this->Paginator->sort('map_lat') ?></th>
                    <th><?= $this->Paginator->sort('map_long') ?></th>
                    <th><?= $this->Paginator->sort('code') ?></th>
                    <th><?= $this->Paginator->sort('status') ?></th>
                    <th><?= $this->Paginator->sort('isolated') ?></th>
                    <th class="actions"><?= __('Actions') ?></th>
                </tr>
            </thead>
            <tbody>
                <?php
					$i=0;
					foreach ($users as $user):
						$group = "";
						$net = "";
						$gate = "";
						if($user->has("groups")):
							foreach ($user->groups as $groups):
								if(!empty($group)) $group .= "\n";
								$group .= $groups->group_name;
								$net = $groups->_joinData->nets->net_name;
								$gate = $groups->_joinData->main_gate;
							endforeach;
						endif;
				?>
                <tr>
                    <td><?= $user->image_file_name_url === null ? '' : $this->Html->image($user->image_file_name_url, ['class' => 'img-circle']) ?></td>
                    <td><?= h($user->username) ?></td>
                    <td><?= h($user->email) ?></td>
                    <td><?= h($user->firstname) ?></td>
                    <td><?= h($user->lastname) ?></td>
                    <td><?= h($user->created) ?></td>
                    <td><?= h($user->modified) ?></td>
                    <td><?= $user->has('profile') ? $this->Html->link($user->profile->name, ['controller' => 'Profiles', 'action' => 'view', $user->profile->id]) : '' ?></td>
                    <td><?= (!empty($group)) ? h($group) : '' ?></td>
                    <td><?= (!empty($net)) ? h($net) : '' ?></td>
                    <td><?= (!empty($gate)) ? h($gate) : '' ?></td>
                    <td><?= $user->has('referrer') ? $this->Html->link($user->referrer->full_name, ['controller' => 'Users', 'action' => 'view', $user->referrer->id]) : '' ?></td>
                    <td><?= h($user->active) ?></td>
                    <td><?= $user->map_lat === null ? '' : $this->Number->format($user->map_lat) ?></td>
                    <td><?= $user->map_long === null ? '' : $this->Number->format($user->map_long) ?></td>
                    <td><?= h($user->code) ?></td>
                    <td><?= $user->status === null ? '' : $this->Number->format($user->status) ?></td>
                    <td><?= $user->isolated === null ? '' : $this->Number->format($user->isolated) ?></td>
                    <td class="actions">
						<?= $this->Html->link(__('Setear Georeferenciación'), ['action' => 'setgeo', $user->id]) ?>
                        <?= $this->Html->link(__('View'), ['action' => 'view', $user->id]) ?>
                        <?= $this->Html->link(__('Edit'), ['action' => 'edit', $user->id]) ?>
                        <?= $this->Form->postLink(__('Delete'), ['action' => 'delete', $user->id], ['confirm' => __('Are you sure you want to delete {0}?', $user->full_name)]) ?>
                    </td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
    </div>
</div>

And this is what it shows debug($groups->_joinData):

ROOT/templates/Users/index.php (line 44)
object(App\Model\Entity\GroupsUser) id:0 {
  'user_id' => (int) 4
  'group_id' => (int) 1
  'net_id' => (int) 1
  'main_gate' => ''
  'created' => object(Cake\I18n\FrozenTime) id:1 {
    'time' => '2023-03-30 21:00:26.000000-03:00'
    'timezone' => 'America/Argentina/Cordoba'
    'fixedNowTime' => false
  }
  'modified' => object(Cake\I18n\FrozenTime) id:2 {
    'time' => '2023-03-30 21:00:26.000000-03:00'
    'timezone' => 'America/Argentina/Cordoba'
    'fixedNowTime' => false
  }
  '[new]' => false
  '[accessible]' => [
    'net_id' => true,
    'main_gate' => true,
    'created' => true,
    'modified' => true,
    'user' => true,
    'group' => true,
    'net' => true,
  ]
  '[dirty]' => [
  ]
  '[original]' => [
  ]
  '[virtual]' => [
  ]
  '[hasErrors]' => false
  '[errors]' => [
  ]
  '[invalid]' => [
  ]
  '[repository]' => 'GroupsUsers'
}

Does 'contain' => ['Profiles', 'Referrer', 'Groups' => ['Nets']] help?

Yes, but it brings all the nets associated to groups, and each user has one of that nets, how do I have to do to show the groupsusers associated net in each user?