[Python] Firestore missing or insufficient permission firebase-rest-api Python

I'm getting this error only when the database rule is set to:

rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write: if request.auth != null;
}
}
}


and if I use this rule:

rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write;
}
}
}


This works, but there are too many security risks so I decided to use the first one but in my coding am I doing something wrong:

#initialization
app = firebase.initialize_app(firebaseConfig)
auth = app.auth()
db = app.firestore()

#signup method

def signUp():
clear()
print('Signup menu')
print('Never forget your password or email; you will lose all your credits.\nIf this happens, contact furjack')
email = input("Enter your email address: ")
password = input("Enter your password: ")

try:
user_info = auth.create_user_with_email_and_password(email, password)
user_id_token = user_info['idToken']

user_wallet_ref = db.collection('users-wallet').document(email)
user_wallet_ref.set({'wallet': 0})

print("Successfully signed up")
auth.send_email_verification(user_id_token)
print('We have sent you a verification email. Please verify your email to use the app.')

input('Press enter to continue...')

logIn()
except:
print(f"Error during signup")
input('Press enter to continue...')
exit()


This is it basically where am I doing wrong or is Google wrong or what is wrong?

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