Get you one of those fun emoji masks and do your video behind the mask. Nobody will know who you are.
Or here's an idea. It is intimidating to jump out there on video. So start with audio, like I did. When I was young I did telemarketing and found it way easier than face to face. Come on my podcast and tell your story. I even give you a questionnaire to help shape the episode. Now your voice is put there, so what's left but a beautiful face and viola, YouTube superstar. I could have you on and announce your new YouTube channel at the same time for people to check you out.
Or, like you said, post videos semi-private at first to get a feel for it. If I can do it, you can too. You want to. Ask yourself, "what is preventing me from getting on YouTube" and then go find an Ethiopian eunuch to produce your show. :)