I hope you don't mind a guy posting on your thread...
Well, most of my friends know and I'm lucky enough that they respect my identity even when I'm with other people who don't know (I'm pre-t, so I will get misgendered). Most of the time... I just don't do it, I don't really care to come out to people who I will only see a couple of times in my life. I introduce myself as Julián, talk about me in male pronouns and adjetives (wich have a gender mark in spanish) and hope that they will pick up on that. Sometimes they do, sometimes they don't and keep calling me by my old name and wrong pronouns. If I have to come out, I do it with only one person, instead of a group of people (wich would make me feel like I'm on a stage or something), or in the company of a friend, which makes me feel safer.
I hope this helped!