The squat is not for everyone. Squat to 60 degrees, not 90. The squat works the quadriceps, the gluteals and the hamstrings. Lean forward keeping your back straight. Arms reaching forward will help you push the hips back.
Feet are slightly wider than the hips.
Feet Straight ahead or slightly out. Knees follow the toes. Again, look straight ahead. Knees are bent. Extend one leg.