When I got to secondary school I was one of the biggest cunts in year 7, I hanged out with bad people which lowered my reputation really badly. I got into a fight and won but that didn't mean anything to me, people annoyed me and I fought back a bit to the fact someone was annoying too much that I punched him in the face. Don't be like me, you need to know who your hanging around with someone that does bad things because you'll be in a bad position and your rep will go bad. Hang with those that care a lot about you and those that always give you a good conversation when you speak to them, also ask your friends if you want to hang out sometime or play sports. If your not good at a sport that doesn't mean stuff, when I moved to America I sucked a lot at Basketball and people taught me how to play, barely anyone in the school played football/soccer which was a impact on me. I eventually got really good at basketball since people taught me how to play I then found a football/soccer field and interacted with people that were really older than me.
To be honest you should play sports because that's the best way to meet new people, I met some 20 year old guy when I was playing soccer/football once and I was/is 14 which is weird but their age doesn't matter sometimes. This community is full of 15-18 year olds and I'm young and yet I'm friends with some of you guys. Just meet anyone, develop a good conversation, exchange phone numbers, talking to them every now and then, hang around a bit and repeat the process. Its not that hard unless your locking yourself inside which I did once and I forgeted up big time