Our work with elite athletes serves as the proving grounds for our methods. Most people don’t play professional sports. But if our methods help athletes at the highest levels, they can work for anyone.
Footage of you squatting would be very helpful here, just in case we can spot something that your coaches aren’t (no disrespect to them, obviously).
Mobility-wise, seek the high medial hamstring / adductor area. Episode 82 has a few ideas for getting after this stuff, but it can be way sensitive. Don’t be afraid to downgrade to a softer ball, or throw a folded towel over the Olympic bar first (regarding the later mobilizations in the video).