5 iron swing

The longer the swing, the more it benefits from powering the swing with lower body rotation. Looking at the video, it appears to be more of an upper-body dominant swing. Your weight ends up more into the toes at this point, which is a sign of more of an arm pull down power source than a body rotation power source. I'd try a few drills to get the lower body more involved rotationally. You could start by dialing in a good checkpoint for hip rotation by practicing impact. In the meantime, check out the "pelvis to club x-factor" video for more discussion. https://golfsmartacademy.com/golf-instruction/pelvis-club-x-factor/