Drupal 9 How To change the Default Routing Path

Here we are going to alter or change the default login (user/login) path.

1. First, create a custom module if you don't know how refer to creating custom module documentations page.
    
2. Create a RouteSubscriber inside your module create Routing folder inside src folder and inside it create RouteSubscriber class RouteSubscriber.php like the following

   
   and put in it the following code:

   <?php
   
   namespace Drupal\YOUR_MODULE_NAME\Routing;
   
   use Drupal\Core\Routing\RouteSubscriberBase;
   use Symfony\Component\Routing\RouteCollection;
   
   /**
    * Listens to the dynamic route events.
    */
   class RouteSubscriber extends RouteSubscriberBase {
   
     /**
      * {@inheritdoc}
      */
     protected function alterRoutes(RouteCollection $collection) {
       // Change path '/user/login' to '/secrete/login'.
       if ($route = $collection->get('user.login')) {
         $route->setPath('/secrete/login');
       }
     }
   
   }
   

    

3. Now we should register the below class as an event subscriber service, to do so:
   Create a file in your root module folder called YOUR_MODULE_NAME.services.yml and put in it:
    

   services:
     YOUR_MODULE_NAME.route_subscriber:
       class: Drupal\YOUR_MODULE_NAME\Routing\RouteSubscriber
       tags:
         - { name: event_subscriber }
   

    

4. Now just clear the cache and you are done!