when playing a game, image freezes and it goes into like a suspension mode where keyboard and mouse looks disconnected and screen goes black, computer keeps working tho but I cant do anything, I have to completly shut it down and run it again

what could it be? graphic issue or what

what game?

what GPU?

nvidia 2070

call of duty mostly, rarely league of legends

sounds like a gpu issue whether its being overloaded or had outdated driver
have you updated your drivers recently? have you checked temperatures while playing? (open task manager while playing and look in the performance tab) and what usage% is it at? (you need to have this open on second monitor if you have as it won't reflect accurate numbers if your are minimized, or look at peak on trend if you only have 1 monitor)

Wouldn't hurt to do a malware / virus scan.

Also double check your overclocks.

overheating Gpu maybe ?

Which program do you use for gpu fans