Actually if you use google and search the platforms where you can possibly sell your artwork many options well pop up their and its just you need to research on what is best platform for you to place your works on
OP isn't looking for some NFT or any useless token for selling his/her artworks. He's looking for buyers who can accept bitcoin in exchange for his artwork.
I'm looking for a site I can sell my art on that accepts Bitcoin and or other digital currency.
If it were me, I would also auction my artwork here or to any other bitcoin marketplace than going to a marketplace that pays newly created token. I've seen a similar project before that offers these kind of some sort of gallery but unfortunately the project failed after their investors dump their tokens.