Im very hesitant to post out of fear of being identified by people I actually know

That’s really it. I’m just so concerned about post anything about anything remotely personal because of the fear of being identified.
I am trying to get more and more out of my shell and talk to people more, but starting online. It’s very difficult to interact when before I speak I judge everything I want to say, and the context I say it in, before I give it a chance to come out of my skull lol.
Sorry there’s nothing too interesting or if this seems attention-seeking. I’m doing my best to not come off like that and to articulate my feelings well. Is the Internet a good place for that? No. Is it a start to get somewhat social bearings before learning to tackle the world? Maybe. Thank y’all :)