Where you want to add your blogger widget is depend upon your blog template. Many templates does not allow us to add widget below attribution .

We know that , we can’t add any widget below attribution widget i.e. Powered By Blogger. All widget lies above this widget.We can’t move any footer widget below the attribution widget. But by this trick you can add or move any widget below the attribution widget.
Howto?
1. Log in to your blogger account
2. Then go to Dashboard > Template > Edit Html.
3. Then search the below code,
<b:section class=’foot’id=’footer-
Read on https://weandwel.site/add-widget-below-the-attribution-widget-in-blogger/