1. Get a fresh device (or you can use your stock device but remember it'll need to be reset)
2. Get a fresh SIM card (or VOIP using TextNow or any other disposable service). You can use Kogan for their $1 sims too.
3. Download Uber and use your new sim + a new email to make an acc
4. Set up Apple Pay or Google Pay and set up a ride to wherever you want to go
5. Once it asks for payment, using Face ID, or your thumb or whatever confirmation you have, confirm it
6. As soon as the trip is confirmed, go into your Google Pay or Apple Pay and delete your card
7. You can keep repeating this until Uber Barrs your device, at which point you factory reset it and rinse and repeat.
You could probably get away with screen sharing a android emulator off your laptop or pc to your phone and using that too.
cheers.