Linux

Bazzite is just Fedora Atomic with extra things slapped on top (Nvidia drivers if u have an Nvidia card, kernel tweaks for gaming, Steam and Lutris preinstalled, etc.). It functions just as well as a normal desktop as any other distro. It's also my default recommendation for anyone that plans on doing any gaming, where my recommendation for complete non-gamers is Fedora Atomic, which is what it's based off. Since it is Atomic (the root file structure is kept consistent across all installs, and updates aren't applied while the system is running), it's very resilient and reliable. If anything ever does break (which won't happen under normal conditions), then you can revert to the previous version from the boot menu and restore it, then either try to update again, or wait a bit before you upgrade if you suspect the issue was a bad update or something. All you need to know is that is called a rollback, and you should be able to find all the information you need about how to do it via a quick search. I can tell you to memorize sudo rpm-ostree rollback, but chances are you would rather look it up in case you remembered wrong anyway.

For people coming from Windows, I recommend the KDE Plasma version, as the UI is more Windows-like than GNOME, so it's a smoother transition. It isn't like GNOME is difficult to learn or anything (it's likely what you used with Ubuntu), it's actually simpler, it's just very opinionated and differs in design philosophy from both Windows and KDE Plasma. You can always feel free to look into the differences on your own by watching videos, as they show off the desktop environments more than text ever could.

EDIT: For game compatibility, I'd recommend checking https://protondb.com/ (for games without anti-cheat) and https://areweanticheatyet.com/ (for games with anti-cheat). Note that it's very often that anti-cheat works in WINE/Proton, but the developers go out of their way to detect that it's running in Linux and explicitly block it. This is not the fault of Linux, or some compatibility issues, it's an explicit blacklist.