The cron defined in the plugin does not work

Question

I'm defining a cron task in the plugin I'm developing. However, this is not working. I don't see this in the WP-Control plugin. Similar problems have been encountered in the past, but this was not a solution for me. I have no idea where I went wrong. Due to the code structure, I have to define it in different classes. However, I couldn't find a solution. My work is below:

<?php
//File Path: ...plugins/x
require_once X_PLUGIN_DIR . 'includes/m.php';
function activePluginX(){ 
    if ( ! wp_next_scheduled( 'x_action_cron' ) ) { 
        wp_schedule_event( time(), 'new_daily', 'x_action_cron' );
    }
}
register_activation_hook(__FILE__, 'activePluginX');
function x_start(){ 
    $abc = new ABC();
}
add_action('plugins_loaded', 'x_start');



//File Path: ...plugins/x/includes/m.php
defined( 'ABSPATH' ) || exit; 

if(!defined('ABC') ) { 
    class ABC { 
        public function __construct() { 
            add_filter( 'cron_schedules', array($this,'x_action_cron'));
            add_action( 'x_action_cron', array($this,'x_action' ));
        }
        
        public function x_action_cron($schedules){ 
            $schedules[ 'new_daily'] = array( 'interval' => 86400, 'display' =>  '1 Time' );
            return $schedules;
        }
        
        public function x_action(){ 
            //do something...
        }
        
    }   //end of class
}