Sitting to a chair and standing back up teaches squat depth with a target. Raise the seat if you need to. Lower it when the reps are easy.

Diagrams show the shape of the movement. Follow the written steps before you add load.
Equipment. Chair
Muscles. quadriceps, gluteus maximus. Also core
All Cheeked Up publishes general fitness education. It is not medical advice, physical therapy, or a promise that your body will change. Stop any exercise that causes pain and talk with a qualified professional about injuries, pregnancy, or health conditions before you train.