Squatting is very difficult for many people simply because they lack the necessary range of motion to move down into their hips. If you have an anterior pelvic tilt, your tight quads and hip flexors will likely overpower your under active glutes and hamstrings and cause your hips to shift back, not down. This will be accompanied by forward lean of the torso and turn the movement into a bend. Bending is fine when done properly, but there are some circumstances where a squat is the safest and most efficient movement.
There are many variations of squats using different kinds of equipment. Generally, squats will work your quads and glutes and aren’t usually too abusive on the grip. Add them to your pull up and pressing workouts and you won’t overtrain any one area.
The squat is a downward movement of the hips, as opposed to a backward movement, and as a result requires much less forward lean with the upper body. The bend to extend motion is best used for picking things up off the ground and the squat is the best way to lift weight that is at shoulder level or overhead. You will minimize forward lean when squatting compared to bend/extend and therefore you will prevent any weight being held at shoulder level or higher from becoming excessively heavy. The forward lean of a bend to extend will move weight out front and the squat is all about keeping centered over that plumb line of your body. Overhead squatting is one of the best ways to develop excellent overall flexibility and realign daily posture.