I am trying to load some stylesheets only on certain “pages” that contain a specific class on a WordPress website.

I want to load stylesheets

add_action( 'wp_enqueue_scripts', function() {
  wp_dequeue_style('my-child');
  wp_enqueue_style('style1_css', '/wp-content/plugins/myplugin/assets/style1.css' , 'all' );
  wp_enqueue_style('style2_css', '/wp-content/plugins/myplugin/assets/style1.css' , 'all' );
}, 1 );

I have tried all sorts of suggestions like the following that is not working.

function check_class_in_content($class) {
    if (is_singular()) {
        global $post;
        if (strpos($post->post_content, $class) !== false) {
            return true;
        }
    }
    return false;
}

if (check_class_in_content('page-id-2022')) {
    echo 'Class exists in the content of this page.';
} else {
    echo 'Class does not exist in the content of this page.';
}

What am I doing wrong and how can I get it to work?

Thanks