Many people find squatting to be more comfortable with a slightly wider stance. Problem is, they don’t actively force their knees out during the descent, causing their knees to track inward during the squat. This can lead to sub-optimal performance and knee problems over time. I’ve found that having people keep a narrower stance and then forcing the knees outward aggressively helps alleviate knee pain and leads to better squat performance over time. Please take a moment out of your day to watch this short, 60-sec video showing a simple squat correction that might be of great value to you.
Of course, there are many different ways to squat, including full squats, parallel squats, half squats, quarter squats, front squats, box squats, and Zercher squats. Not everyone can go deep due to hip anatomy or mobility impairments. And many Olympic weightlifters, powerlifters, and bodybuilders have been successful without aggressively forcing the knees out during squatting. Nevertheless, I feel that squatting in this manner will help the majority of squatters.