As a general principle, I’ve found that if one or two of you experience connection problems during the live sessions, it’s happening at your end. If everyone loses their connection, it’s happened at my end – in which case, just wait and I’ll do what I can to reconnect. That’s only happened once, but it did happen.
As for your own connectivity, it’s best to use a device that’s hard-wired if possible, and if you can only use wifi, be as close to your router as you can. It may also make a difference if others in your household don’t hog the internet bandwidth at the same time.