Same with my brother, he's starting a new school and none of his old friends are in his class. If you have break and stuff, you can go see your friends out there. But, there are others kids in your class, so start hanging out with them. Hang out with your close friends when you have extra time, but you should always have a dude who got your back, in school, and outside of school. Don't just limit yourself to a couple of friends, when you can loads. Honestly, I think just start talking and hanging out with other people and your close friends, and everything will work out. Besides, Skype, Viber, iMessage, and everything else, you can communicate with them through that too.
Read above^^^ And if one of your best friends replaced you, forget them. Like, they can't be your best friends if they just replace you. You replace an item, not a friend. Stick with your other buddies when you can, and try not to stir up fights with that one person. (Sorry about the double post) Make new friends.
Languages are easy, just grab some books, and revise. You can't forget how to speak languages, you just haven't revised over them recently.
