How to handle back button click in android fragments?

Question

Android

Here is the code in the main activity

@Override
    public void onBackPressed() {

        //Обработка нажатия кнопки назад для фрагментов
        FragmentManager fm = getSupportFragmentManager();
        BackPressedForFragments backPressedForFragments = null;
        
        for (Fragment fragment: fm.getFragments()) {
            if (fragment instanceof  BackPressedForFragments) {
                backPressedForFragments = (BackPressedForFragments) fragment;
                break;
            }
        }
        if (backPressedForFragments!=null){
            backPressedForFragments.onBackPressed();
        }

        super.onBackPressed();

    }

Interface

public interface BackPressedForFragments {
     void onBackPressed();
}

And and method overrides inside a fragment

public class PreparationFragment extends Fragment implements BackPressedForFragments
 @Override
    public void onBackPressed() {
        //Код для выполнения
    }

So the problem is that this fragment is located inside another fragment (the subfragment is shorter) and the overridden method is not called from it, but is called from another fragment at all (I think that the getFragments method returns the fragments in the wrong order as I want). In short, How do I handle back button clicks inside fragments? What can you suggest?