Any chance you have an nvidia card? Nvidia for a long time has been in a worse spot on Linux than AMD, which interestingly is the inverse of Windows. A lot of AMD users complain of driver issues on Windows and swap to Nvidia as a result, and the exact opposite happens on Linux.
Nvidia is getting much better on Linux though, and Wayland+explicit sync is coming down the pipeline. With NVK in a couple years it's quite possible that nvidia/amd Linux experience will be very similar.
Not all gamers are triple A gamers. I'd call myself an avid gamer (I used to put in easily 80 hour weeks gaming, now it's almost always lower, but I'll still go on gaming binges during long vacations or holidays).
The vast, vast majority of my time has been WoW and LoL. I have played other games throughout the years, but usually in the same genres (mmo/moba).
A lot of these games have entry fees of below $70. Right now most of my gaming time is cata classic, and that requires $15 a month. Over time that will obviously add up, but everything adds up overtime, and $15 a month is not prohibitively expensive for most people. Also it's really only $15 for the first month, just by leveling in cata classic to max you make enough to buy a wow token, and can easily pay $0 a month every month by just using in game currency.