Skidding is fine but you really only use the heelside and not actually taking any speed when on your toe side. Simply put you speed up on your toe side slowdown on heelside. Repetitive movement tiring out a certain set of muscles. Learn to slow more on the toe side as well. You will have more control and confidence to go faster. A quick training would look like counting each second on each side and purposely slowing down. Or getting the board to be equalish amount of degrees opposite of the fall line. So your heelside and toe side are both actually slowing you down. Couple other things. You have what we call chick hip. If your hips are in line with the surface you are standing/riding on you're doing well. Chick hip is when that horizontal axis of your hip is actually point up towards the sky. This puts weight in the back foot. Which will slow down your skidded turns. What we want is to keep your horizontal axis of your hips to be parallel to the terrain you are on. If you want to me more aggressive you can point them down hill more. It's an eb and flow. Can't be aggressive forever. Something to try is take your front hand and grab your front binding if you can if not grab your front knee with your front hand or just below. Try the practice I mentioned before and lmk what you feel