I secretly hate my classmates who never initiate a conversation with me at all.
Do you hate them because they don't talk to you?
Yes. I want some interaction with people, I'm tired of just talking to my dog.
Feeling lonely and wanting someone to talk to is normal. You should try going up to a classmate and starting a conversation yourself instead of waiting for them to do so.
I hate going up to people. I'm an introvert. It's hard for me to strike up a conversation.
That's understandable. How about starting off small? Say hello to someone in passing with a smile then eventually ask them how their day is going.