Collection Pages not linking to various subcategory buttons or media collections

Hi! New to Webflow but absolutely love it! But…

I am trying to put various portfolio projects in different categories pertaining to the field they associate with. Also, when you click on the subcategories below, I want each of the projects to change accordingly.

I have watched tutorials read things in the forum, and no matter what I try I can’t get it to unlock and unlink from another section (as it was copied from another page’s section) or simply have the sticky category subcategories partner with the collection list wrapper. Any help would be greatly appreciated as I’m in college and this is time-sensitive.