Cache Exclusions for widget ID

https://firstsiteguide.com/get-widget-id-wordpress/
I have added my php a code which I don’t want to cache, to a new widget (for example by means of Ad Injection plug-in widget).
<?php …….. ?>
I have added widget ID = adinj-3 to Cache Exclusions.
But it doesn’t work.
The reason of they are – Post or Pages IDs separated by a, that shouldn’t be cached.
In a page code I see:
<aside id=”adinj-3″ class=”widget adinjwidget”></aside>
– but I don’t see my php a code, that is contents of this widget.

Can you add support of widget ID?