How to find out which template is used by wordpress?

Question

WordPress

Hello.
A question.
What php file is included on the page?
For example, on one site, you can enter the request site.ru/?db_debug=1
And a window will pop up containing all the necessary information. It will also show sql queries and which pages and which templates are connected.
Does wordpress have this? Or similar?

Answer 1

Query Monitor

Answer 2

Not