When I save changes for css and js in my WP localhost env windows 10 the changes don’t take effects immediately!

Try changing the version number on .css and .js files when you change them. That can be a real pain while you are developing so you can use a random number.

    $randomizr = $rand = rand( 1, 99999999999 );// Enqueue scripts and styles

    wp_enqueue_script( 'my-script', get_stylesheet_directory_uri() . '/assets/js/my-script.js', array('jquery'), $randomizr, true );