Bazzite for gaming, but you will only get a cursory glance at Linux as it's locked down for the most part. Avoid Ubuntu like the plague, go for something like Mint (based on but not the same as) if you want to get an easy Linux experience to learn more. If you like doing it the hard way (easier nowadays) go for something like Arch or Gentoo where you get all the controls you might want over your system. I myself have used Debian for years without issue. Fedora (which Bazzite is based off of) is a decent enough distro as well. You can get a better insight in what you could go for by using https://distrochooser.de/