It's just called "Driver Manager" in Mint, I'm guessing it's specific to the distro. I've tried a few different ones, and it's by far the easiest to switch compared to any other. I think it can theoretically be installed on any Ubuntu-based distro, but I don't know of anything for EndeavorOS.
Uhh, pretty sure these guys rock harder...
Good to know! I haven't had any AMD GPUs, but it was my understanding they've been well supported for a while.
Unfortunately, the open source Nvidia driver isn't suitable for gaming yet. But some distros (Mint at least) provide an easy GUI to switch to proprietary drivers. Very easy tinkering, as these things go.
AMD is very well supported in Linux, especially on older hardware. If you use something beginner-friendly like Mint, you shouldn't have to do anything special to get it working well.
I've done plenty of installs for older games. I found using Lutris was easier than trying to do it manually, but it's not perfect (but it handles things like Proton, as another comment mentioned). It'll let you install games from their windows installers, so whatever games you've aquired should install as usual.
I think you can use Steam (for Linux) to manage Proton and your non-steam installs, but I haven't tried it.
Linux Mint is a good starting place. You create a USB that you can use to try it out before you install it, see how you feel about it.
As others mentioned, back up all your important files before doing anything, just in case.
For my own sake, I'm gonna assume there's some 90+ dude in a nursing home, shitposting and laughing his ass off regularly. The nurses just assume he really likes beans or something, and that makes him laugh harder.
Keep trolling, old dude.
Oh, the 20 tabs thing is perfectly reasonable. But I'm one of those crazy people who completely shuts down his computer every night, including closing my browser. Been using computers for too many years to trust a browser to not leak memory.
Burrowing Owl off to a good start for gold.
Jars of Clay - Peace is Here
Jars of Clay - I Heard the Bells
Sufjan Stevens - Put the Lights on the Tree
Sufjan Stevens - Star of Wonder