This is a very common feeling to feel, and while I don't know the details of your situation, often people "hate" somebody for little to no reason out of having a low self-esteem themselves, or out of pure jealousy. However, I can't say that people hate you in general, as most people certainly don't hate you. I am not sure if you have ever been bullied or not, but if so, it may be easy to assume that people "hate" you from past experiences, leading to misinterpretations of the actions of others that make you feel as if they dislike you. It can be a choice of words taken the wrong way, a misread facial expression, or other actions that may make you feel as if you're being rejected. Humans don't always think before they speak or act. I can understand how you are feeling, and the feeling of being rejected by seemingly everyone can just lead you to feeling lonely, as well as anxious when it comes to being in social situations; but I can assure you that not everyone you meet is going to hate you for no reason.