I wonder to how we delete the threads or posts manully with link
<a href="deletethreads?tid=1">Delete</a>
Because modal delete is bad since we cannot customize it
You can customize the modal with basic CSS/HTML.
Check the moderation tool template. You need to submit a form to create $_POST call.
Deletimg thread / post using simple url ($_GET) is not a good idea. Though can be driven that way using a plugin.
Also need to check moderation permission of the performer.
its not the problem is,
see my picture below
https://prnt.sc/XrVt5nY3C8oV
I cannot custom the modal cause "closed" always show in left corner bottom modal,
how to customize that close button?