I already use Linux, on and off, but the lack of support for a (proper) CAD program is the biggest issue for me.

Most games are, but there's a few asterisks mostly not because Linux is incapable of running it but because there's super invasive anti-cheat that doesn't allow it.

For me, as someone who's not into esports-games, I just expect games to work on Linux now, and they nearly always do. The exception has been a couple of old or obscure titles that run fine in a virtual machine. I'm not running any fancy version of Linux, just Mint, and the only thing I do to get them to work, is install them on Steam. Proton is amazing.

If you are into esports-games, though, there's a risk that they'll require kernel-level anticheat, and Linux does not do that.

What games aren’t supported that you play?

Most games have worked for years now

I need games to be supported

SteamOS and steam consoles will be really helpful for this I think

Edit: typo

Steam and Heroic have been working fine for me for playing games on Linux.