Why do people from all boys school talk about me so easily, they dont even know me and somehow one day they bring me up, am I the bad person?

So i found out that my "friends" from all boys schools like to talk, since they probably have nothing better to do. I goto an all girls school so there's no way i see them everyday. One day i was on a phone call w my friend and she brought it up to me that boys at this school liked to talk about me (sometimes good sometimes bad) it made me really uncomfortable as i didn't even goto this school, nor have i talked to some of the people mentioned. They didn't say anything along the lines as i talked to every guy there or anything (because i dont) but they said things like "she's just ew, she's weird asf, she's a nobody", and that just made me feel very low about myself. I dont know what i did wrong to be honest as i literally just try to mind my own buisness. I dont know if im the problem or if im the bad person.

Why do people from all boys school talk about me so easily, they dont even know me and somehow one day they bring me up, am I the bad person?
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