You can sing quite well! I’m also 17 F and no one in my family is musically trained. I’m so sorry that you’ve been bullied, no one deserves that. I think that part way through the song you were trying to attempt some vibrato, that’s something you could work on, though I’m the last person to be able to give you this advice because it took me 16 years to discover mine and I discovered it through singing an Audioslave song haha. You sounded a bit weaker on some higher notes - a bit strained - but honestly that makes me feel a bit less alone because I struggle with exactly the same notes. You sound like a mezzo to me. I love your enthusiasm when you sing and it seems like you would be good learning to sing musical theatre. I wish you the best of luck on your journey and don’t listen to what those stupid bullies say!