@logic9867 I'm sorry to hear you're facing this problem. If you're willing to give it another go at some point, I can say what worked for me to reduce the number of connection problems: the faf ICE web telemetry UI
The tool lets you see, during the lobby phase, which connections are direct and which are via proxy servers. You can then ask the affected players to rejoin the lobby until all the connections are direct, which will help a lot.
The faf ICE web telemetry UI is available via the system tray once you are in lobby.