I'm a Freshman in High School. What can I do to make friends easier?

As stated above, I’m a Freshman and I have no friends. It’s only the second day, but it seems like everyone else has known each other for years and I feel left out. I try to say something to them, but they don’t really pay me much attention.

Lunch is even worse because it seems like everyone else is half a million years older than me and I don’t know where the freshmen are at (surely they’d sit with each other) so I end up sitting in some awkward space next to a guy with lots of facial hair (that looks like he’s 25).

We don’t sign up for clubs until about next week and I’m worried that I won’t have any friends until then. I really want to know some people so that I’m not completely uncomfortable all the time.