It’s really easy and quick to install a distro so you can just test them out. Get three you think you’d like, try em out, you’ll probably like all of them, but you get to pick your fav.

There is no “best”, just “best for you”.

If gaming is your focus and you just want to go into Linux without research, I’d start with Ubuntu or Mint for a couple weeks. If you’re liking it, check out some others, but don’t be surprised if you go back to Ubuntu or Mint simply because you found them easy and working just fine. There’s no wrong choice, just lots of good ones. It is all up to how you like it with no anxiety of making a bad choice 😁