AITA for snapping at my friends when they alway pick at me?

I (16F) have a friend group with 4 people. Me, "Onyx"(14F), "Ann"(14F) and "Doris"(15F). The group had multiple fights and it is all because of me. At 1st me and "Onyx" were friends and "Doris" and "Ann" were too that is how we got together. I did not like "Doris" and "Ann" at the time but I grew close to "Doris" quickly, however I still have an awfully awkward relationship with "Ann". She constantly talks behind peoples back and hates everyone including me. I really tried to communicate with her but she does not want to talk to me. We all sit next to each other in specific classes but whenever I sit next to her she just ignores me and it has been like this for two years. But for the past one year things have been all downhill, they clame that I Humm, wisle and touch them too much but at the start of the friendship I specific asked them to tell me when they feel bothered (I have not hummed, wisled or touched them in a year and a half) yet they sometimes let me do those things so I assumed that they do not mind and sometimes they are just too tired or overstimulated. They told me that it is not a matter of how they felt, and that I kept doing those thing? After that they questioned why I am not active in the chat but whenever I start a conversation they ignore me so I just do not see the point in texting. They are also mad that I did not see one text, and that is then I snapped. I told them that it did not matter because they will not reply, and that I had enough pretending to be perfect for them. Now all 3 of them are on me and I do not know what to do. I feel bad but I can not help it, my love language it touch and my phone is old so sometimes it bugs and so I do not get notified. I think the misunderstanding is because of the age gap and the fact that they are really immature. I still love them, but it is so hard to just hold back for their sake. I also hate to hurt other people and now that whole class thinks that we all talk bad about them because "Ann" isolated us with the bad mouthing, but in fact I want to be friendly toward everyone