Two ways, and both remove the same things.
Tap your picture in the top right, then Account, then Delete account. It happens immediately.
Write to delete@twolane.app from the address you signed up with, and say you want your account deleted. We do it within 30 days and reply when it is done.
We ask you to write from your own address because it is the only way we can tell it is really you.
Two things survive deletion, and neither contains anything that identifies you:
Reviews you wrote stay unless you delete them first, because other people rely on them when deciding whether to drive out. Delete them in the app before closing your account, or ask us to remove them in the same email.