Talking Behind My Back

I'm at a program for high school students and one of the teachers think I'm not participating enough and then in basketball all the guys were mean to me as soon as I walked in just because I was a girl and then my auditory processing disorder and visual processing disorder got in the way because no one warned me it was mostly boys and a really rough team so i had to sit out the coach was really rude about it and harsh towards me my mom asked me if I wanted to FaceTime so I said i needed to go to the bathroom and sat on the bathroom floor and face timed her then one of The RA's came in and switched my activity and was rude to me and said that it was time to go so I went out and I was only 2 feet away she was blabbing about it to 2 other RA's and the 2 other RA's had already admitted that they were already talking about me and then they went and blabbed about it in the lunch room to other RA's and when I left my seat they were talking about it my friend told them off and they were shocked and denied all of it which I was sobbing walking away from basketball telling my mom I couldn't do it anymore then a RD came and talked to me and I told him everything he talked to them but he brought me to the nurse first and the nurse helped me calm down but I am super mad and upset towards them and I really could use advice.