Probably Ubuntu or Mint. They're friendlier for new users and handle a lot of the proprietary drivers for you. Something like Kubuntu, which uses KDE as its desktop environment, is closer to Windows than bog standard Ubuntu. I haven't tried gaming on either, but when I tried on Fedora I had no issue running Doom, Diablo IV, or Cyberpunk 2077.I wouldn't recommend diving right in. There are guides that show you how to shrink existing disk partitions or boot off external drives so you don't break your existing system. Once you're comfortable enough, then you can consider making the switch permanent.
anal_reactor|6 months ago