You need to take a systems approach. Look upstream and downstream of the ankle for where the problem may originate.
Start with your foot where that is the foundation.
The tissues here may need some work.
A tight joint in your foot

Episode 07: Bro, Your Navicular Bone Dropped
Pro Episode #3 – The Flat Feet Solution

Ready to Run Progression 1
Ready to Run Progression 2
And the tissue of your leg that wrap into the ankle and foot
Ready to Run Progression 3