My first day of high school was terrible!?

calm down :) it's your first day of highschool AND you're at a new school. People will eventually come up to you and talk to you, or just start a conversation yourself! Try to look approachable and not miserable. If you do start a conversation, talk about anything! Any sports at the school that youre interested in, where the bathroom is, what cl is next, doesn't matter :D if someone's a jerk to you, they dont deserve to be your friend anyways. good luck!