Check if list is empty and wait until empty

Hi, I am trying to create a flow that works with two SharePoint lists.  When an item is created on list 1, the flow will check list 2 to see if the list is empty (has no items).  If list 2 is empty, the flow will copy the item from list 1 to list 2.  But if list 2 is not empty, it will wait until list 2 is empty to copy the item from list 1 to list 2.  Below is one of my attempts, which results in the flow continuing to run without copying the item from list 1 to list 2, even when list 2 is empty.  I haven’t created the branch yet.  I would greatly appreciate any help!  Thanks.