So, you know how when you buy a piece of art, that piece of art is exclusively yours, but at the same time, you don’t own the copyright or anything to that art, and anybody can take pictures and make copies of it?
That’s Art NFTs in a nutshell. You basically own one of many often randomly produced pieces of online pixels, that you do in fact own, but really have no control over anything about it. Aside from the ability to sell it, of course.