If you're having a hard time getting deeper into your squat and reaching 90 degrees try to work on some of these movements and stretches. These will help loosen up tight hips, hamstrings, and adductors.

1. Supported deep squat

Hang onto the pole and sink into your hips, hold onto the pole lightly and try to relax into it. Hold it for a few minutes.  

 2. Unsupported deep squat

Use your arms to press your elbows into the knees, sink your hips low, keep the chest up and back flat. Go in and out of this position, try to hold for as long as you can. 3 sets

 3. Hip openers

Knees are bent, push up onto your knees, and push your hips forward, sink back down. Repeat 10x and then switch which leg is in front. 

4. Adductor stretch 

Knee bent sink into the one hip keeping the other leg straight. Hold for 30s each side repeat 3 sets

 5. Hip Flexor Stretch

One knee bent, push into that side, you should feel the stretch in the front of the hip hold 30s 3 sets

 6. Frog stretch

Feet turned out, hips nice and wide sink back into your glutes hold 30s 3 sets