Custom: comment counter modification / integration

Hi,
looking for a GD developer. Goal: adding counter for number of comments in template Supreme
The issue: basically, my current GD installation was imported from a previous simple wordpress installation, and “old” comments are simply comments, not reviews. So, in frontend, missing the comment counter, the template shows only the number of reviews.
For example, a listing have 0 reviews and 10 comments, but in front-end shows only 0 reviews.
I’d like to add, near “X reviews” (of single listing and in list of listings of every city), something like “and XY comments” (adding a function like

<?php $totalcomments = get_comments_number(); echo $totalcomments; ?>

I’m using Supreme template.
See attached: on red what to add

Feel free to ask further details
Thanks