Look up the pictures of the sleeping Buddha, and you will understand. Lie on the right side of your body with your head facing west or head facing west, with your right hand holding your ears, and your legs slightly bent together. Your left hand naturally lies flat on the side of your left thigh, along the left side of your body. Anyway, I can't sleep. Adjust the angle between my right arm and my body. Otherwise, a Buddhist will lose his head when he sleeps, which seems to be called auspicious lying.
If you are satisfied, please adopt it. If you are not satisfied, please ask.