I say this to any Tech owner…learn…your…tech. It is not good to know almost nothing when using stuff like tech, as you’ll end up running circles and confusing others when you need help.

Ill break your questions down from top to bottom, and any references I make you might not understand ill explain after.

1. How is it gaming on that Linux distro? Just like most distros its fine, you slap proton on in steam compatibility, most games work, when they dont you go to protonDB and find your steam game, then try applying launch options/suggested tinkering. If that fails you can try Proton GE
2. What can you game? At this point with Linux, anything…besides games with Anti-cheat. Now wait before you leave already its not every anti cheat game, but unfortunately its majorly the majority of Anti cheat games. Why? Well theres not many specific reasons besides theres not enough Linux users to justify making a whole dev team dedicated to an OS. Destiny 2, does not work and there seems to be no intention in supporting Linux.
3. How is the performance? Majority of the time its fine, rarely you’ll find games with major issues or any issues.
4. Comparing the distro to W11/10? In terms of games, no. Games natively run on windows with 0 tinkering. In general use? in your case? Yes, you definitely can
5. Monitor hz. X11 has an issue with dual monitors that differentiate in specs like resolution/hz. Wayland doesn’t have an issue but has some bugs due to it being new. Will you have problems? well thank yourself for buying AMD and Radeon hardware cause linux and AMD go hand in hand. You will not have issues. (Use wayland for now, if u have issues, use X11)

Now to answer my references what is proton? proton is a compatibility layer for Linux that lets windows games run on Linux OS’s by using wine (and other tools) to fix issues that would normally cause games to fail booting/running.
What is X11/Wayland? They are Graphic Platforms that your GPU uses to essentially “render” or “utilize” your GPU in simple terms, but in technical terms its a window system.
If you want a mostly seamless experience in Linux, I would recommend Nobara, its a distro based off Fedora made by GloriousEggroll who made Proton GE (hence GE). Its kernel/librarys/repositorys and such are made in a way where its meant for gaming. It does lack in terms of being up to date compared to bleeding edge distros, but its not by a bad amount. It still updates frequently as of right now, but theres times where it lacks updates for a few months.
Pop_OS! is another Distro aimed towards gaming if you want to check that out.