I don’t know what to do everything I do turns into a terrible experience l feel horrible

I study but I don’t remember anything I feel dead because I don’t have any life in me my days goes and goes just for me to do nothing and hurt myself people are mean to me my classmates don’t talk coz my current rank is low I don’t remember the last time I had a proper friend let alone a best friend.
The quarterly results are not even out yet but I know it’s bad my rank will probably drop again my head hurts just thinking about the teachers nagging me in front of the class I’m already labelled as a dumb idiot who can’t do basic equations I don’t know how to face my problems whenever I think about moving forward it just goes back to the way it was.