The servers I suggested are much lighter and simpler to setup than synapse. Commet is very Discord like which lets you on board people much easier than Element. It also supports voice rooms unlike Cinny(waiting for this to merge https://github.com/cinnyapp/cinny/pull/2680)

Tuwunel or Contiuwuity for the server and Commet for the client(though presently you'll need to provide another client to register)