Need books with the MCs being Villians

I recently watched I Care a Lot on Netflix and realized that I have never read any books where all of the main characters were villians.

I loved the concept of two bad guys fighting each other and using their wits and their snark.

Any good recommendations?

I typically avoid dectective stuff, but am open to anything!

I find it different from the MC realizing they're the bad guy.

I want straight up bad guys.

Thanks!