I think they didn't like u cause they though u were weird probably lol
I was in a similar situation when I was in elementary school too, but things change in high school I was a super bitch, I only use people and speak I'll of every person who dare to speak to me and incredible the people in my class were obssed whit being close to me, so people have bad judgment in elementary I was a cute kid and nobody wanted to talk to me and high school I was pretty disgusting and I receive a lot of presents in Valentine's lol
Lol... everyone have different personality...
I am difference situation with yoo won but a bit same. i love to smile and i also like to do anything that anyone told anything. But they still didnt like me because i nice's person. so when i Change my behaviour. For example, always speaking bad stuff. why they still didnt like me?? i'm still wondering that reasons.. hmm.