What have I done to deserve this?

So recently so much stuff has been going around my school about me and they are all rumours. I notice my friends slowly leaving me. I’m being called a bitch and a slag and other things now from people I don’t even know. I’m not a mean person, and I don’t acc know what I’ve done for people to start hating me. I can’t talk to my parents about it. And so much stuff is being said about me on that dumb Sarahah app which is so annoying because now idk who the people are that are saying stuff about me. I’m honestly so fed up with it.