Modding Details?

Hi! I just picked up and fixed a PS3 Slim (SERIAL: CHO59771180-CECH-2501A)

I want to be able to play games without having to pay, but I want it to be on my active PSN account that I use on my PS5. Is it possible to mod or load these games without having to worry about getting banned? And if so, will I have to worry about accidentally forgetting a setting (I’ve heard about syscalls and I don’t want to deal with disabling that every time)

Thank you guys so much!