How to show ProgressBar after AdMob ads in Adapter?

Question

i am making android app using Rest Api and date getting from my WordPress Website , all works fine , i have added AdMob ads between content and when its loading page 2 from page 1 there is ProgressBar showing that "Posts Are Loading" at the bottom , now the problem is that when ProgressBar and Ads comes to same number than ProgressBar hides under AdMob ads , i mean it doesn’t show than , how can i make it visible and should be visible after ad ?

this is my code in Adapter

public RecyclerView.ViewHolder onCreateViewHolder(@NotNull ViewGroup parent, int viewType) {
        mContext = parent.getContext();
        if (viewType == AD) {

            adview = new AdView(mContext);
            adview.setAdSize( AdSize.LARGE_BANNER);

            adview.setAdUnitId(mContext.getResources().getString(R.string.banner_ad_unit_id));

            float density = mContext.getResources().getDisplayMetrics().density;
            int height = Math.round(AdSize.LARGE_BANNER.getHeight() * density);
            AbsListView.LayoutParams params = new AbsListView.LayoutParams(AbsListView.LayoutParams.FILL_PARENT, height);
            adview.setLayoutParams(params);

            new RequestConfiguration.Builder().setTestDeviceIds(Arrays.asList("C5468C2B8941779E34B14EB796B9EA1B"));

            AdRequest request = new AdRequest.Builder().build();
            adview.loadAd(request);
            return new Holder(adview);


        }
        if (viewType == viewTypeData){
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.post_list,parent,false);
            return new MyDataHolder(view);
        }else {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_loading,parent,false);
            return new MyProgressHolder(view);
        }
    }

 private int getRealPosition(int position) {
        if (LIST_AD_DELTA == 0) {
            return position;
        } else {
            return position - position / LIST_AD_DELTA;
        }
    }

    @Override
    public int getItemCount() {
        return dataset.size();
    }

    @Override
    public int getItemViewType(int position){
        if (position > 0 && position % LIST_AD_DELTA == 0) {
            return AD;
        }
        else if (dataset.get(position).title.equals("progress")) {
            return viewTypeProgress;


        }
        return viewTypeData;
    }
    void showHideProgress(boolean shouldShowProgress){
        if (shouldShowProgress){
            dataset.add(new Model("progress","","","","","","","","",""));
            Handler handler = new Handler();

            final Runnable r = new Runnable() {
                public void run() {
            notifyItemInserted(dataset.size()-1);
                }
            };

            handler.post(r);

        }else {
            dataset.remove(dataset.size()-1);
            notifyItemRemoved(dataset.size()-1);
        }
    }

i have tried to change LIST_AD_DELTA numbers but still no gain

 int viewTypeData = 0,viewTypeProgress = 2 ;
    private static final int AD = 1;
    private static final int LIST_AD_DELTA = 4;