Sorry but I don’t understand your last answer.
I guess you’re using a tool like google translate. Please try with https://www.deepl.com/translator, if it does support your native language.
It’s usually way more efficient than google.
What I believe understanding is that you’re looking for a way to install pfsense into Debian, with a virtual machine or so.
Well using a virtual machine could be a solution. But considering you’re looking for a router software, a solution could be to run your server on BSD with pfsense and to run YunoHost into a LXC container into BSD.
It could work that way, but it wouldn’t be an easy way.