If you have aching feet or flat feet (fallen arches) you will really feel the benefit of doing a few foot exercises each day.
Don’t overwhelm yourself by trying to do them all. Try a few and pick your favourite 3. Set aside 5 minutes a day (while watching TV) and do the exercises.
Wearing barefoot shoes can also help to strengthen your feet, but it’s best to introduce these gradually into your day as your feet and calves will most probably ache during or after wearing them. Saguaro are the ones I wear. They have a nice wide toe-box and they’re cheap to try too.
You’re re-training your muscles, so be kind to yourself and make it a gradual process.
Otherwise you can try wearing shoes with a built in arch support, like the Skechers ‘arch fit’ range.