Firebase unhackable rules without authentication?


It is possible?
I have an app with tinyDB and the app saves the user points to tinydb, but i want to delete data from firebase.
e.g: When user click the button , the “test” tag deleted from firebase,
But i dont want to store user login details like password or email address (so i dont have login system)

My firebase rules:

How can i make my app unhackable without auth system? How can i make safe firebase rules?

I’m sorry to say this but nothing is unhackable !!!
But you can add some security measures to make it more difficult to access.
Please read this (i’m shure help you):