How do you fix a stickey L3 joystick?

so when you take your thumb off does the thumb stick pop back to neutral?

have you spilt anything on it recently? you may need to open it up and clean out the joy sticks.

that’s not too terribly hard to do.

if the thumb stick does not pop back to place then you may have to either resolder a new thumb stick.

if its moving when the thumb comes back to neutral and it still drifts unfortunately the thumb stick has stick drift, usually you can set dead zones in games to reduce how bad it drifts but it’ll only get worse with time.