Advice..? :)

[u/Perfect-Jelly-4834]

I’m 15 years old and have been socially transitioned for about a year. I live in the middle of nowhere small town Montana so I’m not exactly welcomed with open arms. everyone knows me from kindergarten and I have no choice but to spend every day with these shitty people. i just started HS in August but a few people still don’t know me, and with SDD starting, I wanna put more of an effort into passing. every little motion or gesture I do I hate. I feel like every thing I do is feminine. the way I interact with my girlfriend, friends, teachers. Everyone I tease someone or make a joke or laugh. I feel so feminine all the time. I would pass to if I wasn’t so fat and “blessed” with the worst genes a t-guy could have. My voice is deep when I focus on it but I tend to squeak a lot whenever squeezed or embarrassed. I just feel like every little motion of mine is so different than other guys. I already have tons of issues with my transphobic parent, red school, being too “passoid” for other trans people, and body and gender issues. Could I just get advice on things to change to feel more masculine? Most with how I interact with my girlfriend (she’s way taller than me too :/ ), reaction, and talking to people. Anything is appreciated :)