tough magnet
I recently switched to Linux Mint 21.3 on the 3rd of July 2024, and I was up and running with Steam and discord with no bumps in the road within about 40 minutes (I downloaded the .deb install files directly from their websites respectively, which is a lot more like the windows experience for me).
And in the following days I setup Lutris to run Ubisoft Connect. That did work, but there were a couple of bumps that were only solved when I found out about a setting within Lutris that made Ubisoft Connect run flawlessly.
However I also tried to install Star Citizen through Lutris and it doesn't work, but that's because of anti-cheat software, which is really down to the developer to enable.
In my experience so far, everything I've wanted to run through Steam has just worked. And Steam recently changed how their proton compatibility layer works, so that game install files just go in the same steamapps/common folder as you'd expect on Windows, so this makes modding easier, as a lot of the time it involves changing files within that game folder.
Lutris will work for a lot of situations, and there are also standalone implementations of WINE, but just know that 100% compatibility isn't guaranteed, because you're running through a compatibility layer, there's always a potential for something to just not work.
Lutris has its own discord server that's worth joining as they're quite helpful over there too.