CloudKit for iOS and tvOS implementation for Blueprint Only Projects

Hey, just wondering what you use for online multiplayer support if this does not support that. I wanna start setting this up but I’m unable to find a straightforward answer as to how making a multiplayer game would work using any type of subsystem and don’t want to spend time doing something that’ll just screw me out of hours of my life.

Having gamecenter work for achievements yada yada would be fine down the line, but I just want to be able to play my game with a friend over multiplayer on our phones in testflight. Any clues?