Why do people hate?

So, I just got out of high school. I go to a big university now. My family is kind of known for having a lot of money but that isnt even really true. I drive a nice car but that’s really it. I feel like everybody around me looks at me as if im a show off and as if i dont belong.
Why are they so negative ?
I didnt grow up here so Im already the outsider just because of that. Ive really had it. Every day is torture for me.