ahh I saw you were trans and I just had to say something!
I'm also trans (FTM) and the struggles are r e a l. I'm still in the closet but I just wanted to offer some tips to pass for a guy (and they actually work!)
As for hairstyles, if your family isn't accepting you having short hair (my family thinks I'm a girl lmao) just wait till you're 18 like I will, then cut it and style it however you see fit! I personally want to have a pixie cut with a left sideburn and dye my hair black or white✨
For your voice, if you have a high pitch girly voice like I used to, try talking through your chest instead of your throat!
Here's the full tutorial! https://m.youtube.com/watch?v=N3RvtCaVv3E
Next is clothes (the hardest part for me heh). If your family wants you to dress in more "feminine" clothing, find an excuse to buy oversized sweaters, flannels, cargo pants, etc. by joining a sports club, or join more P.E. activities so you don't have to be forced to wear a dress or skirt!
as for your chest, try getting a smaller size sports bra! I use one that's a bit smaller than my chest size, and wear it for a few hours (minimum 3hrs max 8hrs) then take it off. Please be careful though because excessive use can damage your ribs, increase difficulty breathing, or damage skin!
If you can't do that, wear oversized clothing that hides your curves!
As for coming out... I'm still a closet teen with a lgbtqia+ hating family so coming out was never an option for me, but if you have anyone supportive then come out to them! You'll feel a lot better afterwards knowing that you got a secret off your chest!
I hope this helps! If you need any more advice, or simply just a ftm army friend then I'm here!
Have a great day/night/evening, and don't forget to love yourself, for you're the manliest guy I've ever known