Woocommerce can implement Wishlist only through a plugin or code and hands too?

Question

Bookmarks

It is also "bookmarks", "add to favorites" and "heart button".
If only a plugin, what is the optimal one? Of course, I would like to use them minimally, only the necessary types of custom fields and SEO pro, there is no way to do it with my hands. If you can do it with your hands, then please send an article with a clear analysis of such a code, you can also use an English one.
In general, I want to parse and understand this mechanism "from and to", not for "faster".

Answer 1

Answer. Of course you can!
A plugin is code written by someone.
Download any plugin and see its code.