Unable to retrievw data of firebase current online user

Question

I want to retrieve data of specific node (clicksRemain) of current online user from firebase into a textView but the data is not showing. Below is my code.

PracticeActivity

public class PracticeActivity extends AppCompatActivity {

    TextView link1;
    DatabaseReference dRef;
    FirebaseDatabase firebaseDatabase;
   


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_practice);

        link1 = findViewById(R.id.link1);
        
        firebaseDatabase = FirebaseDatabase.getInstance();
        dRef = FirebaseDatabase.getInstance().getReference();

        FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();

        if (user != null) {
            dRef.child("clicksRemain").addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot snapshot) {
                    String remainingClicks = snapshot.getValue(String.class);
                    link1.setText(remainingClicks);
                }

                @Override
                public void onCancelled(@NonNull DatabaseError error) {

                }
            });
        }else{
            link1.setText("10");
        }
    }
    }

I think the code is correct to check if a user is logged in or not as if a user is logout then the app shows the value 10 as written in this code.

Snapshot of database

Thanks in advance