Redirect Wordpress default registration url to a custom page

In WordPress, you can use the login_init action hook along with the wp_redirect function. Add the following code to your theme's functions.php file:

// Redirect /wp-login.php?action=register to /registration - www.websitefunctions.com

function redirect_register_page() {

    if (isset($_GET['action']) && $_GET['action'] === 'register') {

        wp_redirect(home_url('/regisztracio'));

        exit();

    }

}

add_action('login_init', 'redirect_register_page');

After adding this code, whenever someone tries to access /wp-login.php?action=register, they will be redirected to /registration