I was doing the same thing (I too run my computers into the ground, though I also didn't want to move to Windows 10 because of all the analytics at the OS level sending data to them MS added to that version, plus and frankly, it worked so I couldn't be arsed).

I also switched some time ago, pushed by Steam's impending end of support plus more and more stuff coming out without Windows 7 support.

However I took the dive and switched to Linux rather than Windows 11, to a great extent prompted by people here reporting good experiences gaming on it (since I already have quite a lot of expertise in it and I mainly just use my PC for gaming) plus it's part of a broader set of changes to avoid enshittification (such as replacing my TV-Box with a Mini-PC with Linux) I'm doing at home and am very happy with the result.

It's less heavy than Windows, even booting faster and seems to have extended how long I can keep going before that computer is totally run to the ground, though for that it also helps that once I started upgrading by changing the OS, I also went and did a few partial upgrades of the hardware, like replacing my old CPU with an equally old one but twice as powerfull - which used to cost 200 bucks but now was 17 bucks second hand - a more powerful graphics card and a more modern SSD disk for the games partition (it's actually a modern M.2 SATA on a 2.5 inch housing adaptor, and that's as fast as SATA ever got and to get better than that you need a PCIx M.2) - basically I did the upgrades I could do on the cheap without changing motherboard and everything else that depends on it (like memory and a newer generation CPU) and which would still be compatible with the Windows 7 boot partition I still have around (though I haven't actually been booting it). Since I went from Windows 7 to Linux rather than Windows 11, none of the hardware upgrades was wasted in just making up for the extra bloat on Windows 11 and the machine definitelly feels a lot more performant.

As for games, most just work, about 1/3 need extra tweaking to work well or work at all and only 1 or 2 so far I couldn't get to work at all.

Curiously at least one game - Borderlands 2 from Steam - that didn't work on Windows 7, works on Linux. Also I can now run games whose minimum Windows version is 10 which I couldn't before.

Also since all non-Linux games are running on the Wine compatibility layer, Linux is actually better backwards compatible with older Windows and DOS than Windows itself, which is nice for Patient Gamer types like me.

I think that with Linux in it my PC is actually compatible with more games than it was with Windows 7.

I seriously think it's one of my best decisions in years.