Firebase storage and firestore database rules

General
1

What should the database and storage rules be so that each user can only read, write and upload their own files?

2

once you create a user with a UID you can give specific permissions in Firestore Database rules like this:

rules_version = ‘2’;

service cloud.firestore {
match /databases/{database}/documents {
// Replace this with your admin UID
function isAdmin() {
return request.auth != null && request.auth.uid == “UID”;
}

match /{document=**} {
  allow read, write: if isAdmin();
}

}
}