Some people have lost strength in the ankle due to a litany of issues such as:
Nerve damage
Muscle strain
Shin splints
Ankle fracture
Etc
Getting a stronger ankle joint doesn’t have to be complicated.
Some people have the ability to get stronger, but others may not have that ability.
Check with a licensed professional to see if the nerves are working properly before starting a structured exercise program for the ankle.
This is a basic exercise and is intended for general education.