You can have it now; rent a VPS; you don't need a huge one; should work on 2 vCores, 2-4 gigs of ram.  You do need Debian 10 or Ubuntu 18.04.  Install Nginx first and the self install will create the reverse proxy server block.  There is a walk through on the Jitsi site; just do a google for Jitsi self hosted and make sure you are on the jitsi site.  They even tell you what ports to open.