Commit to some ankle mobility!
This is short and to the point. The ankle complex is notoriously stiff and can throttle your squat-potential! Instead of avoiding it and always looking for a work-around, fix your business.
It's simple, it's just not easy. You need to:
A video is worth a thousand words. Check this out: https://www.youtube.com/watch?v=C_NM-55lErc