Check and tighten the screws: using a suitable screwdriver, check whether the screws at the connection between the swing arm and the frame are loose and tighten them one by one. Make sure each screw is tightened in place, but do not over-tighten to avoid damaging the screw or the swing arm.
Checking the swing arm for wear: Before tightening the screws, check the swing arm itself for signs of wear or damage. If the swing arm is badly worn, it may need to be replaced with a new one.
