Good to have you on the forum. Focus on the landing of your stride foot. Your stride foot lands way open, and therefore your knee and hips follow.
Ideally, your stride foot toes should point directly to the target or be slightly closed (toward 3B). Put some white athletic tape down in a straight line toward home plate, and then as you throw your bullpen, aim to land with your foot on the athletic tape and toes to the target.