Fitting a stereotype

I’m a 14 year old bisexual girl, and am constantly judged. I have short, bleached blue hair, am a slight ‘tomboy’, and haven’t had any long relationships. I am a walking stereotype of a bisexual person. People always hear that I’m bi and not gay and kinda just shrug me off as if it isn’t important or valid. People don’t think that I’m a part of the LGBTQIA+ community, and that I’m just “going through a phase”. Hearing people that I know and trust say these things is so hurtful. It makes me feel invalid, and like the agonizing and long journey that I went on to find the real me means nothing. I’ve been having a really hard time with this, and I hate fitting this stereotype sooo much. I want to be seen as an individual person, not a stereotype of a group of people. I am just as much of the LGBTQIA+ community as anyone else, and want to be able to express myself and be me without being judged. People constantly assume things about me, and have called me so many names. I don’t know how to deal with it, and just want to be able to be me. Does anyone have any advice or has been in this situation before?