I cannot add images from gallery Android Studio

Question

I am coding the add fragment. That is on the right of the bottom navigation menu. But when i press add on the navigation it keeps navigating to the home page. And when it works properly i can not add a photo picker to users to pick image from gallery. My code is below

package com.example.uninotes;

import static android.app.Activity.RESULT_OK;
import static android.content.ContentValues.TAG;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;

import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.core.app.ActivityCompat;
import androidx.fragment.app.Fragment;

public class AddFragment extends Fragment {

    ImageView imgGallery;
    Button btnGallery;


    ActivityResultLauncher<Intent> activitylauncher = registerForActivityResult(
            new ActivityResultContracts.StartActivityForResult(),
            new ActivityResultCallback<ActivityResult>() {
                @Override
                public void onActivityResult(ActivityResult result) {
                    Log.d(TAG, "onActivityResult: ");
                }
            }
    );

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_add,container,false);
        btnGallery = getView().findViewById(R.id.clickable);
        imgGallery = getView().findViewById(R.id.imageView2);

        btnGallery.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(Intent.ACTION_PICK,MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                activitylauncher.launch(intent);
            }
        });

        return view;
    }
}

I was trying to make the user pick image from the gallery.