Is it ok t ride my bike with a broken foot?

Ask your the doc: Depending on the areas of the foot that are broken, it may require your foot to be immobilized and avoid weight bearing. The pressure applied on the pedal when biking may be too much. This is a question that you need to ask your treating physician.

No: Not a good idea you could cause further damage not to exclude muscle, nerve and vascular damage. You can cause what os called a pseudarthrosis where instead of bone bridging the fracture you could get a fibrous cleft causing prolonged pain and need for surgical correction.

No.: Any bones that need to be healed are best done so in a fashion which means they are being moved as little as possible. Riding a bike does not help this.