Sit the bar higher on top of your traps not lower, you're doing low bar squats already which is why you're leaning forward. You're supposed to be straight up when you set yourself, looked like your were doing good mornings at first
Bring your feet in to just outside of shoulder with and point your toes slightly outward.
Old squat video I did here
You can see how long I am so having long legs isn't really a valid excuse
But on the dead lift side of things, Now I really only do Romanian and stiff leg deads and I seem to get better results. Regular deads aren't really mandatory like squats are in my honest opinion. I get work my glutes, hams and lower back better with the aforementioned lifts. With traditional deads you'll get more quad work but that can be compensated by doing leg presses or hack squats. I usually super set still legs and leg press for that reason