The end of Windows 10 is approaching, so it's time to consider Linux and LibreOffice
(blog.documentfoundation.org)
Depends on your gaming habits. Check ProtonDB for Steam games compatibility, check Lutris for others. Some anti-cheats (especially kernel level anti-cheats) don't work on Linux, if devs decide to make it work on Linux, they can. For example they enabled Linux version of anti-cheat and Hell Let Loose works fine for some time now. If you mostly play single-player games, you'll probably be fine.
If you want every possible gaming related programs to be pre-installed, you might wanna go Bazzite. If you want to explore on your own pace, Mint is a solid choice. If you want something like Bazzite but mostly empty, there is also Aurora.