I'd like to start over
You have a few options here.
You can go to “More” → “Profile” and click “Delete logs between dates” and bulk delete the logs from when you started until today.
If you haven't created an account (Look under “More” → “Account” to check) then just delete the app and reinstall.
If you want your account deleted go to “More” → “Account” and tap “Delete” top right. But it will take 24 hours. But you can delete the app and reinstall and you have a fresh start. Then after 24 hours you can create an account with the same email if you like.