Facebook messenger. Every keystroke is recorded. Go ahead, as for your data from Facebook. Every keystroke is logged.

Facebook Messenger is the worst way to be communicating right now.

Now is the time to migrate yourself and your people to WIRE or Signal. Your messenger people will likely only move once, if ever.

One way to encourage this is by simply refusing to be available by text on anything but WIRE or Signal. They will eventually give in and use it. You can still FaceTime, and for free, via Signal or WIRE.