if you don't know if your parents are supportive, i would mention a made up friend that is trans, or if you already have a friend who is just to see what they respond with. if you think they are i would just casually let them know how you've been feeling and what you want to be referred to as. if you think they aren't and it could possibly be unsafe, then i would hold back on it until you think it is. good luck! i personally came out half way so far and it's been going well. let us know if you need any help, and good luck again :D

When I came out as ftm in 2018 my parents told me they didn't support me. I was lucky to have friends who did so I was able to show my parents how much happier I was, and it took a few months before mom started being okay with it and trying to use my preferred name and pronouns. My dad didn't until I made him come to a therapy session with me in June 2021. My friend who's mtf told her parents recently and she said they were surprisingly supportive of her. Coming out is different for every person, and if you think someone might not take it well I'd tell them but then give them some time to process before bringing it up again. I told my parents over the phone and then we didn't talk for 3 days, when I used to call my mom at least once a day.

My parents were also super unsupportive of me. Do not come out unless you know they are going to support you for who you really are.