Hello @katsepatessera
Thank you for your interest in Filter Everything.
Indeed, it’s a good question. You can test how filters work on any WordPress archive page like Blog page, Shop page, Category, Tag, Date, Author or any other archive page. Such pages are native for WordPress and they do not reuqire any other plugins to create them.
On singular pages it works exactly in the same way. You can ensure in this for example here on this demo page – https://demo.filtereverything.pro/elementor/
Idea is that to display post loops on singular page you have to use some Page Builders that usually are paid software. So for Free WordPress instance you can use Filter Everything free version. For WordPress instance with paid plugins you have to use paid filters verison.