I've had sever ankle injuries over the years monsta, but they were sprains and hairline fractures, so i dont know if what worked for me will work for you.
A few things that I was given to do, band work from different angles, almost like calf presses.
the roatation board, it was a half circle on the bottom, I would stand on it and shift my wieght on my ankle in a clockwise, then counter clockwise motion (if that makes sense).
slide mat work, where you would be on a friction control mat, and you would slide back and forth from right to left.
I hope some of this helps, I also find that when my feet get tired and sore, putting a tennis ball on the ground, and rolling your arch back and forth over it seems to help.
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.