Nobody likes me because I’m rich? Watch
More likely other students believe that you won't be interested in getting to know them or are wary of you in case you think that they want to freeload/borrow money.
That right there might be your problem. They don’t dislike you just because you’re rich, there’s something else. For you to assume it’s just because you’re rich suggests you have made no attempt to find a genuine flaw in yourself and place the blame on them. It suggests you have no empathy for how they feel at what you may be doing. If you really do believe it’s something to do with your wealth then the likelihood is that you caused that problem by flaunting your money. I don’t know it’s hard to say. But it’s probs deeper than coz your rich lol.
You say its cos you're forced to eat at lunch by yourself, instead of assuming that people will come to you, how about you try and make friends by going to them? Make an effort to talk to people at your lectures/seminars, have convos with people you sit next to a lunch, join societies, visit your uni SU, etc.