My senior year was my worst year ever

My senior year of high school I was going full day to tech school, I was enrolled in the Early Childhood Ed program. So I would get on a school bus at my high school that would take us all to the tech school. My best friend was in that same bus but she was at a different building. I loved her so much she was like a sister to me but she had changed so much since our freshman year when we first met. She was so sweet so respectful towards everyone and would never say anything bad. We were so close our freshman year but our sophomore and junior year we did not see each other much so we grew apart. I did not have any real friends besides her because I was so quiet and shy but she was very fun and talked to everyone, she had a lot of friends who were the ones who changed her. So at the beginning of our senior year we got really close once again, but she had changed so much and not in a good way. She was always complaining about her parents and the guy she was dating she was just such a disrespectful person and I just kind of got sick of all that, I never said anything I just listened and eventually we just stopped talking completely. There were some other girls on the bus who she would talk and all they would do was make fun of others. After a while she found out one of the girls on the bus that she talked to was talking crap about her so she stopped talking to them and that was when she started talking to me again. My past years in high school I was always getting perfect grades. Always in the honor roll but my senior year I just lost all interest. I didn’t do my work I did not care at all about trying the last semester I got a 39% I honestly do not know how I graduated. I had one friend who I would talk to but we were rotating schedules every couple of weeks so when she wasn’t in the same lunch as me I would sit in the bathroom stall the entre lunch period. So with my friend we were talking ok for a couple months and then she began to talk to the girls who talked crap about her again, I could not understand why but eventually we stopped talking and she would only talk to them. There was one time when one of the girls that she talked to said I was a bitch and she agreed with her, I had my earphones in when they said it but I was not listening to anything. In another occasion the one who was my friend refered to me as “the fat one”. My whole senior year I felt so worthless, I always had suicide on my mind and I tried to kill myself multiple times. On graduation day I had my whole family with me, all of my classmates were running to their friends and I had no one. I when to were the graduating class was suppose to meet and had a seat. The girl who was my friend was standing close and said you look so pretty, I didn’t even look at her I just fake smiled. I hated that year so much. I have never told anyone about this and if you read through it all thank you!