ps5 controller problem

hello there. i have a serious controller problem that i have no idea how to fix. it shows mostly when i try to pilot a heli. once im in it immediately starts tilting and i cant control it at all. the same happens usually when i firstly enter a game on the first map. the cursor goes to the upper left corner by itself. and again when i enter a tank sometimes it doesnt stop moving. i must have a problem with the left stick but there is no other game that it shows. i heard something about a dead spot or whatever but i cant seem to find any settings. anyone?