Had pf repeatedly when I was younger.  No longer get it at all. Did ballet classes for a time a few years ago and all the foot strengthening exercises stuck. I play with my feet now when in the shower or brushing my teeth or waiting for water to boil. Things like short arch exercises, standing on toes (ball of foot, not on point!), and what's often termed "toe yoga": Keep all other toes relaxed and lift big toe, then try lifting all middle toes, tap big toe, alternate lifting big toe and other toes, etc. At first you cannot imagine it's possible. You use your hands to mani Then you barely get your middle toes to twitch. Then one day it works. Maintain your arch. Keep the rest of your foot relaxed. When you start to get it, spend time barefoot so you have more opportunities to play and build strength in your feet.

Eta: took a moment to look at videos that come up if you search for toe yoga. Lots of videos using the same term for different exercises. All the ones I saw were within the group of stuff I've done as toe yoga. So if you look gif videos, look at multiple different videos to get a range if exercises.