I am so sorry to hear that your friends are treating you so poorly. I know how devastating it can feel when the people in our life change for no apparent reason. I wouldn’t try to change their opinion or get more information. Instead I would keep developing the other friendships you have and put your effort into developing new ones. Your profile says that you are in 9th grade, and by the sound of it this is the first time you’ve been hurt in this way. One of the lessons in life that most of us have to learn is how to walk away from situations that come out of the blue, don’t make a lot of sense, and have hurt us. By putting your effort into current and future friendships you will be learning how to not to lose yourself when others treat you badly.