How to exit the app when bottomsheetdialog showen

I have bottomsheet that check if the internet connected or not! if no connected the bottomsheet showed, if not the bottomsheet dismiss. I used bottomSheetDialog.dismiss(); function to prevent the user from pressing the screen to hide the bottomsheet. Now what I want is that the user if press back when bottomsheet showed exit the app.

not exit bottocheet first and then exit the app

Here's what I made so far

I used an interface called IOnBackPressed, And I Override exit app from "MainActivty" with this code

 @Override
public void onBackPressed() {
    Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.fragment_layout);
    if (!(fragment instanceof IOnBackPressed)) {
        super.onBackPressed();
    }
}

And I added the exit app method in the fragment that has the bottomsheet "TopFragment"

 @Override
public boolean onBackPressed() {
    bottomSheetDialog.dismiss();
    requireActivity().moveTaskToBack(true); //exit the app when press back
    requireActivity().finish();
    return true;
}

But it is not working, and when I press back it does not exit the app.

Here is my method for bottomsheetdialog

    private void showBottomSheetDialog() {
    bottomSheetDialog = new BottomSheetDialog(requireContext());
    bottomSheetDialog.setContentView(R.layout.bottomsheet_no_internet);
    if (CheckNetwork.isInternetAvailable(requireActivity())) {
        bottomSheetDialog.dismiss();
    } else {
        bottomSheetDialog.setCancelable(false);
        bottomSheetDialog.show();
    }
    Button buttonNoInternet = bottomSheetDialog.findViewById(R.id.buttonNoInternet);
    assert buttonNoInternet != null;
    buttonNoInternet.setOnClickListener(v -> {
        if (CheckNetwork.isInternetAvailable(requireActivity())) {
            adapter.notifyDataSetChanged();
            bottomSheetDialog.dismiss();
        } else {
            bottomSheetDialog.dismiss();
            adapter.notifyDataSetChanged();
            bottomSheetDialog.show();
        }
    });
}

So how can I do that?

from How to exit the app when bottomsheetdialog showen