Life is short and mobility exercises are many.
Kill a restriction flock with one mobility stone.
This video opens up the potential to isolate at the ankle, but to also address problems at the knee, foot, toes, hips, and many more if you use your imagination.
Mobilizations are done to improve and strengthen appropriate movement patterns. If you are a bit of a mess the more joints you can appropriately attack at the same time the better.
Good luck and Keep Moving