Variations Select List

Hello, I have a problem with the variants list.
I would like it to have a built-in search module. I saw that it can be done in a simple way with “Ajax select2”, but when I enter php code into functions.php, nothing changes.
“function enqueue_select2_jquery () {
$ assets_path = str_replace (array (‘http:’, ‘https:’), ”, WC () -> plugin_url ()). ‘/ assets /’;
wp_register_script (‘select2’, $ assets_path. ‘js / select2 / select2.js’, array (‘jquery’), ”, true);
wp_enqueue_script (‘select2’);
wp_enqueue_style (‘select2’, $ assets_path. ‘css / select2.css’);
}
add nazwa (‘wp_enqueue_scripts’, ‘enqueue_select2_jquery’); ”
I would also like there to be a photo of the variant or just a color next to the variant name. Is it possible to do something like this? An example if I would like it to look like + additional search engine module.
https://www.hairstore.pl/semilac-lakier-hybrydowy-7ml-p11215.html
(this is not my site)

Or how to make the “show more” button in the second example from the attachment.