Anyone that disagrees with you is a bully?
"It's weird though cause they always pick on me. For example a cashier was really rude to me, and then there was a guy right after me who she was super nice to."
If, different, unrelated people, in different, unrelated, situations and places, are all "picking on you" maybe you need to look at what they do have in common.
I just bought a print at a thrift shop. Turns out its by a famous artist and might be semi valuable.