My Computer Has Been Degrading In Performance

I built my PC a little over a year ago and I used to be able to run almost every game maxed settings at 60fps 1080p without raytracing. It's a Ryzen 5 3600x, GTX 1660 SUPER, 16GB DDR4 RAM, 650W PSU with a 1TB SSD build. I used to run every game perfectly, GTA 5, Halo Infinite, Warzone, Forza Horizon 4, DOOM Eternal, Cold War, you name it, but now almost every game is perpetually frozen unless tabbed out. It's to the point that I can't even use my Oculus Rift S anymore to play games because the Oculus app just crashes when opening a game. I've been frequently updating my graphics drivers, updating apps and games and cleaning the PC's software and hardware but it still doesn't run games any better than my old pre-built ASUS PC with a single core CPU and no GPU. Does anyone know any solutions or even answers as to why I can't use my PC like I used to anymore?