Ask New Tutorial Setup Load Balance Jitsi Meet

hello, I want to ask about Load balancing installation. I have 3 servers, 1 server will be the main server and 2 other servers will be the videobridge. I followed the installation tutorial on this link, but my bridge does not work and i see it in jitsi handbook, that tutorial is outdate. is there a new tutorial for Load Balancing installation?

one thing, do I need to install prosody before installing Jitsi-videobridge?