I can't see the vids above as YouTube is blocked on the network I am on right now, but my suggestions would be:
1 - roll a ball under your foot for a couple of mins per foot
2 - practice lifting just your big toe on each foot (shoot for 10-20 per side)
3- practice lifting just the other four toes and leave the big toe planted(shoot for 10-20 per side)
4- practice spreading your toes as far apart as you can and then relax (shoot for 10-20 per side)
5- practice squeezing your toes as close together as you can then relax (shoot for 10-20 per side)
Additionally
-check hip flexion - make sure you can touch your toes with straight legs (if not see
FMS)
Add some soft tissue and some leg raise drills
- Check ankle mobility - how far can you get your toes away from a wall and still touch your knee to the wall while keeping your heel planted (goal is 4-5")
if not, soft tissue and add some ankle mobility drills
Your posterior chain (including fascia) all play off of each other all the way to your toes
I've played with this and have built it into practice for some of the people that work with. might take some practice.
An important questions would be, what kind of foot wear do you wear most? do you spend much time bare foot?
If you think about what happens to someones leg after being in a cast for a few months, loss of muscle mass and decreased motor control ect. esentally shoes are casts for our feet. spend less time bound and get those dogs running free
If things have changed since you last posted, what did you do?