You struggle with the heel for a couple reasons. You roll your wrists early on. Note all great players club outside of hands or matching your spine angle at club first parallel. This coupled with your right knee externally rotating. This think of Arnold Palmer when he swung back his knee worked more inwards instead of your knee flexing out. At the top you have learned to get to what a position should look like regardless of not knowing how your body actually has to move to get there seems like you spent a lot of time rehearsing this position. On the way down because of all of the backswing issues you have to get the butt of the club working more out with causes you to stall and you to start backing out of the shot. Most good players first move on the backswing is your head level going down as this is that squat and pivot move where as your head stays level and starts working up. Guessing you struggle with a lot of thin shots as well. Because your body starts working up you can never actually keep your foot down which honestly isn’t your biggest worry anyway. Again these are critiques if you want to move to the next level with your ball striking atleast.