I’m working with Firebase Firestore and have created a collection using user IDs as document IDs. However, when I try to query the loginUser collection to retrieve data, it shows zero documents. On the other hand, when I query another collection (where the document IDs were generated automatically by Firestore), everything works fine, and the documents are retrieved as expected.

Issue:

• I manually created documents in the loginUser collection, using the user’s UID as the document ID.

• When I attempt to fetch the documents from this collection, it shows “No documents found”, even though the documents exist in the Firebase Console.

• Querying a different collection (where document IDs were auto-generated by Firestore) works perfectly fine.

Single Document Query works correctly

var querySnapshot = await FirebaseFirestore.instance
    .collection("loginUser")
    .doc(user.uid)
    .get();

but when I retrieve all doc it shows zero

static Future<int> getUserCount() async {
  try {
    // Fetch the collection snapshot
    QuerySnapshot querySnapshot =
        await FirebaseFirestore.instance.collection('loginUser').get();

    if (querySnapshot.docs.isNotEmpty) {
      print("Documents found:");
      querySnapshot.docs.forEach((doc) {
        print("Document ID: ${doc.id}");
      });
    } else {
      print("No documents found in the 'loginUser' collection.");
    }

    return querySnapshot.size;
  } catch (e) {
    print("Error fetching user count: $e");
    return 0; // Return 0 if an error occurs
  }
}

firebase Rule

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

Why isn’t my query retrieving documents from the loginUser collection, even though they exist in Firestore? Could this be related to how I’m using user IDs as document IDs, or am I missing something else?