I didn’t have anyone that would take time to teach me to drive but I had access to a vehicle (weird situation I know). Where I live it’s not legal to drive alone with your beginners but having someone teach me was not really an option.

There’s a park two blocks away from me that I would go to for sports or exercise, one day I just started taking the car with permission and got used to driving. It would be two stop signs and two turns each way. Eventually I would start taking the car for other small trips and eventually built the skill and confidence.