Alt tab pc crashes and freezes.

Sometimes when i alt tab my pc freezes but i can see the game running and any other screen but my pc wont work neither mouse or keyboard. Ive had this for over a year but now it keeps doing it often and often i cant deal with it anymore
my pc has a ryzen 5 7500f
rtx 3060 and 64gb ram. i dont see where the problem can be. it also doesnt overheat