Continue what you’re doing on the desktop and set up beeper with only your Facebook account to handle messages from your phone. It’s still not great, but I think it’s the best you’re going to get. You’re really only gaining Facebook, not seeing where you’re connecting from. Also, Beeper is just a pretty front end to a matrix server with a bridge connecting to Facebook Messenger. You could totally run it yourself if you wanted; check out the “self-host” link near the bottom of the page.
Continue what you’re doing on the desktop and set up beeper with only your Facebook account to handle messages from your phone. It’s still not great, but I think it’s the best you’re going to get. You’re really only gaining Facebook, not seeing where you’re connecting from. Also, Beeper is just a pretty front end to a matrix server with a bridge connecting to Facebook Messenger. You could totally run it yourself if you wanted; check out the “self-host” link near the bottom of the page.