Ranting about my mom because I'm done with her

So my school has like an online gym class thingy and I've been thinking that it would be a better option for me than regular gym. I hate gym with a passion. The kids in that class hate me and want nothing to do with me (idk about this school since I have it next semester but that's what it's always been like), also I just feel like shit the entire time and I'm not athletic so I always suck at stuff and it just makes me feel like absolute shit and I hate that I can't be normal and just use the lockers like a normal kid and idk I just hate gym, so I tried to talk to my mom about online gym class and she instantly didn't believe I'd do the work and she said it would be good for me to socialize and shit and that I should do gym and she was instantly against the idea and when I tried to explain why I didn't like it she was all like "if you're actually trans you have to hold your head up high" or whatever and she was like "you're so insecure, you need to stop and use your voice" and shit like that and she brought up the fact I'm usually hesitant to use the boys bathroom (I've gotten more comfortable with it over the years, I'm just worried something will happen to me sometimes.) and she just didn't listen to me at all and idk what to do about it. I told her that it bothered me that she didn't listen and I told her to please give me a chance to prove I will do the work instead of assuming I won't instantly and she just said she completely disagreed. I asked her again to please think about it and she didn't say she would she just told me to go to bed. I just don't think she understands that gym can be a big deal to some people and not that big of a deal to others.