Might suggest box/bench squats as an alternate way to learn correct squatting. With the bar placed mid range on the traps (not too far down..not too far up), which seems to work for most guys.
Box/bench (some also use platforms) squats can also set the depth of each rep, and how low you want to go. Pausing a second or two, at the bottom, can be a great help also. Probably a good idea to relearn the basic squatting style for each of our body types. Knees tend to take the whole of the blunt force, as well as the lower back, which doesn't always have to be the case. Should be almost an equal distribution of the effort required to lift.
Can also relearn the front squats with the help of a box/bench. Which, when done right, recruits the quads way more that regular squats. Again adjusting to our individual body type.
Been a lot of pro's & cons about the depth of a squat and the affects on the knees over the years. Some even believe that the reversing of a squat, before reaching it's bottom position, can be doing more damage than good for most. Like if doing parallel reps (1/2 -3/4 down) and reversing the motion and coming back to full standing position again can be brutal on the knees. Others believe that a full ROM is a must when squatting.Olympic lifters seem to hit that rock bottom position when doing squat cleans/snatches, even when in training workouts. It's a individual choice, of course.
Good Luck