기능 구현Firestore 초기화FirebaseApp app = FirebaseApp.DefaultInstance;FirebaseFirestore db = FirebaseFirestore.GetInstance(app);유저 데이터 읽어오기private void ReadUserDataFromFirestore(){ DocumentReference docRef = db.Collection("users").Document("GuestID"); docRef.GetSnapshotAsync().ContinueWithOnMainThread(task => { if (task.IsFaulted || task.IsCanceled) { Debug.Log("F..