(Sorry for my bad english) 

I am not good at sports, mainly bcs I don't like to sport in front of people so I barely practice and when I do, I never go all in bcs I'm afraid that I will look crazy or weird and people will laugh at me. So I never have good points for PE and everyone assumes I'm just really bad at sports even though I know I could be better but I never say or show that.
For PE we need to wear either wide shorts or girls can also wear sport pants that are really 'skinny' and I don't like to wear them bcs they make me feel fat but I do wear them bcs if I wear shorts everyone will see that I pick my skin and I have a lot of scars as a result.
There are these girls in my class that always laugh and judge people in pe not only me but also a lot of other people. Especially this one girl is always really judgy, I was in a team with her multiple times and everytime I messed up she would sigh and give me dirty looks and made me feel worse about every mistake I made wich made me play even worse. Luckily there were other people even of opposite teams that see this and try to encourage me. For example 2 weeks ago we had volleyball and I was with that one girl and 2 other friends in a group and she was bitchy to me in rhe evaluation like she had enough of me and after the evaluation it became worse, she was complaining the whole time how it sucked and sighing every time I couldn't catch a ball even though she didn't even throw it well to me. At this point I had enough so I turned my back on her didn't look at her anymore and didn't pass to her. Even though I still felt bad every time I missed. My friends were really supportive even when I missed, they gave me tips and said that I was getting better wich made me feel better. 

On a semi unrelated note: 
This week we had rope skipping and I'm really good at that but like always I didn't go all in bcs the girls were laughing on how stupid I and some other people looked (this happened the most during warm ups were we would be in line and I was last in line so I had the whole class watching me). After warm us we needed to learn a new trick every 4 min and I picked them all up really fast but every time I jumped I felt like an idiot so after one or two minutes I would stop and say that my asthma (which I have but not severe) was not so good lately and I was tired wich was true but I was able to do more. But in 2 weeks we are going to get evaluated and that gives me even more anxiety bcs we are going to need to do 40 counts (5 tricks for 8 counts) without hesitating or stopping wich is really hard for me to do bcs my anxiety make it so I can't breath bcs I always feel like there is a pressure on my lungs so I wouldn't be able to do more then like 3 tricks even though I can do them all I'm really scared and really don't wanna go to pe anymore.

I have had multiple anxiety attacks in pe and every time I go I feel more and more insecure I really don't know what to do anymore and really need some advice on how to deal with my anxiety for all of this basically 

Thank you for reading this