com_clubs/src/admin/views/clubs/view.html.php

<?php

use Joomla\CMS\MVC\View\HtmlView;
use Joomla\CMS\Toolbar\ToolbarHelper;

// No direct access.
defined('_JEXEC') or die;

class ClubsViewClubs extends HtmlView
{
    
    function display($tpl = null)
    {
//         $this->offers = ClubsOffer::loadOffers();
        $this->clubs = ClubsClub::loadClubs();
        
        ToolbarHelper::title('Club-Management - Clubs');
        parent::display($tpl);
    }
    
}