How to deal with being lonely and being disrespected?

Im a current sophomore in college and I am extremely lonely all the time. I have no friends and no one seems to like me for some reason. I had a friend of mine during an argument tell me that I was dumb and annoying and when I asked her if she actually thought I was dumb said yes I really do. I finally called her out on her being mean to me for no reason and she just started saying I was the one who was being mean. I stopped talking to her because I just felt disrespected and its clear she doesn’t like me. At work, my boss is sometimes nice to me but likes to yell at me in front of coworkers and I’m the only one he yells at and It does make me upset and humiliated but he never apologizes especially when I feel like you can tell Im visibly upset. My friend never apologized. It just seems to me that a lot of my coworkers and people around me don’t really respect me or consider my feelings and I feel extremely lonely and sad all the time cause of it. It makes me think that people see me as someone they don’t care about or worthless. I’m just wondering if someone else has similar experiences and how they dealt with it? Is there any tips on how to maybe mask being upset or what to do when your boss yells at you in front of people?

How to deal with being lonely and being disrespected?
Post Opinion