firebase security rules auth != null is not working

[gulabsagevadiya]

How to access database with user's auth
like user can access only their part of data with user's auth uid.
in this project I have to set rules to read write to true only then works

[NomadicDeveloper22]

This sounds like you just don't understand the syntax for firestore rules

check here:
https://firebase.google.com/docs/firestore/security/get-started