I would be happy to have an easier solution to delete ads inner the comments.

In the list view I think there will be it good to have a checkbox at the left margin to click, if I want to delete this entry. like in the file explorer.

So I could check all the entries I want to delete in the first step.
In the second step I click on the action button - in this case on the button "delete" (or I choose in a menu the entry "delete" and click on "Go").

So it would easier to administrate the comments.