Can i use 2 page content-forum & content-forum-slug on bbpress?

I currently have a bbpress folder in my theme which contains all the theme of my forum. I have a page archive-forum.php which displays the forum page and a page content-single-forum.php which displays the topics. I would like to know how to create a different display for a forum. I would like to display the first forum with a content-single-forum-slug.php and the other forums with content-single-forum.php. I have tried all : content-single-forum-slug.php, single-forum-slug.php, content-single-slug.php, single-slug.php. I didn't succeed so I think it's not possible.

With the query monitor plugin, I see that I have to use a php page like this : single-forum-rules.php. Rules being my slug. I create a page single-forum-rules.php but it does not work. It always takes the page.php file. But if I remove the -rules it works I have a white page with written page rules load...

Any idea how to force it to find the right page?