Do you think it is normal that sometimes I feel like a nuisance?
What makes you feel like a nuisance?
I'm an unliked person, people don't pay much attention to me, when I speak I feel like everyone's just waiting for me to be done.
You shouldn't make assumptions about how people feel about you. Maybe you can try talking to some of your peers to see how they feel. You might find they feel differently than your assumptions.
I'm not going to make the effort to get to know people since they are never going to like me. They all just go along with being nice to me. They only want something from me.
It sounds like you are just assuming everything, and the assumptions are all centered around hurting your feelings. Would you agree that you have low self-esteem or something like that? It's something that you should work on.