PC Turns off with no bsod or mini dump files

my pc will randomly just turn off after playing games the time varies sometimes it shuts off almost instantly after loading a game and then other times it can run it for hours. it also doesn't crash if i have my browser just open and some other applications open such as steam, discord spotify etc

i looked up some methods that might be the cause such as disabling game mode

and some of stuff in the event viewer

ive also done some stress tests on the cpu and gpu and it doesnt seem to be the culprit i also dont think its the ram but i am starting to believe it could be the psu failing.would anyone be able to help me?