What games are you trying? Off the top of my head, I've played monster hunter world, hunt showdown, cyberpunk 2077, baldur's gate 3, norman reedus and the funky fetus, elden ring, deep rock galactic, doom (the new ones), apex, the dark souls games, warframe, and a few more over the years.
I havent played a multiplayer game for more than an hour in years, but I especially avoid trends like fall guys and fortnite, so it isnt anticheat or anything.
Okay but with a 1660 super even on Windows that game won't run too well. I know its above minimum reqs but that card is old. Even my 2080 TI is starting to show some age with framerates and what.
As for the card, I bought it before it became apparent how overpriced it was, and it was a major upgrade from my second hand 970 anyway. And I didn't splurge, I saved and bought what I thought made sense for me, when I could've 'splurged' on a 3080.