Your stance is far too narrow and most of your squats are about an inch high. Widening your stance to shoulder width will keep you from rolling to the outside of your feet and help with depth. Also, you don't need to jack up your elbows so high. Honestly, your bar speed isn't bad. You aren't really grinding yet. I predict that stance change will help keep things going. You can be a little heavier, too. Don't be afraid to eat.