I know I'm kicking at an open door with this, but I'm going to say it anyway.
There's this screenshot going around in trans facebook groups telling people to stay on twitter and the meta platforms. The argument is that these companies want to destroy our strong communities by making us abandon them.
And I think it's just such a bad argument, at least for trans people, because look: On facebook, you're not fighting back and standing your ground against meta. Meta is the ground. They are in control of every community that stays. They decide what you see and when. They decide who gets your content put right front of them, and they decide what those people see right before that.
If they want transphobes to see your trans positive post, then that's what's going to happen. If they want your trans positive post on a private group to be seen by almost nobody and mostly just by those who are going to leave disheartened and hopeless comments, then that's what's going to happen.
You cannot fight facebook on facebook. It's not just that they control the terrain. They are the terrain. Maybe it's different if you have enough sympathisers on the inside who can make it work clandestinely, but I don't see how that could possibly be the case for trans people.