Oh okay, I see what you need now.
The issue with that is, when you load up the page, the plugin will not do anything to the elementor widget, until it is loaded. You have basically two options to resolve that:
– Via Elementor – I believe there are query options for the posts widget, to exclude certain items, however I do not know if post meta based exclusions are supported.
– Or simply enable auto populate on ajax search pro, with this configuration: https://i.imgur.com/au3yNmK.png
The second options might be easier in my honest opinion.