For me, anything 25 FPS or higher is 100% fine and I’ll be enjoying my time. I never play competitive online shooter games ever, though. All single player ones like GOW and the likes. I game on a 60 Hz 4k monitor. GPU is AMD RX 6600 alongside Ryzen 7 5700G and 32GB RAM. My games are set to meduim most of the time at 4k. Demanding titles are on low. Surprisingly, GOW and GOW Ragnarok are both set to ultra and I still get around 40ish FPS.
Most of the time, 60. But it depends.
Competitive FPS/action games I want 120, story games with FPS 60, anything turn based or slow paced is probably fine at 30 or 40. It also depends on a lot of other factors. On my handheld (steam deck like) I aim for 30 or 40, but my main PC always shoots for 60 or higher.
That and I usually tune my settings so I get a bit more than 60, then lock the framerate to reduce stutter.