I always hear how guys say they squat so much...I'd like to see the form and depth and technique. Some guys are just naturally good squatters through.
I'm not really built to powerlift but I used to try squat really heavy Max Ot Style for sets of 4-6 reps got up to doing that with 190kg (with light knee wraps) probably only went to parallel or just above though...one day almost tore my quad on the side. Very close call, It scared the shit out of me!
... I got bigger but mainly stronger doing that.
Now I don't go more than 140kg (that's heavy enough for me) and push the reps rather for 4 sets of 10-12 reps. My best is 16 good reps with 140kg (315 pounds) Had a spotter, used belt, No knee wraps, right down - ass to ankles, slow and controlled up and down, not locking out at the top)
I do this once a week and a high rep leg press workout later on in the week. My legs have never been better and my knees are grateful. Guess you get wiser as you get older