Well, am confused as your first posting specifically mentioned jitsi!
"Is there anything (docs) in this forum for the install of Jitsi?"
Obviously, no. This forum isn't a 'one-stop-shop' for any/all things. Never has been!
IF providers of Jitsi say they recommend Ubuntu/Debian, trust them!!! For you, that could mean 2 DO's. Fine ... best tool for the job. And for jitsi, use their forums.
'SoS', Ken