what did I do wrong?

Hello my name is Ava and I had a boyfriend and friends but that all changed one day. I came to school like always my friends and boyfriend would wait for me by the front gate but they weren't there so I thought in my head maybe there inside but they weren't so i just went to breakfast and the bell rang after a while so I was walking to class and I seen my friends and my boyfriend I went up them and they just walked away from me I thought they were playing tricks or a prank on me but they weren't this went on for days then weeks,then months. They all started to bully me after months of being bullied I became depressed.