I get you on the language thing. I mean its difficult sometimes but you speak English and presumably Norwegian which should help, more languages come to you because the first is always most difficult.
I'm from Scotland but I live in the south of France right now. I think Norway is quite similar to Scotland in many ways. The south here is amazing, warm, blue skies, scenery, friendly people, a lot to keep you busy, amazing lakes forests mountains beaches and everything in between all in one place with one of the nicest climates in Europe.
England Ireland Scotland Wales all speak English but it wouldn't be much of a change of scenery. All of the big city's of Europe and the world a lot of people will always speak English.
In Holland most of people you meet speak English. French, english spanish and Italian languages are all close to each other once youre surrounded by it for a few weeks you start being able to figure it out. In Germany a lot of people speak English as well. I just don't worry. I've been through some of eastern Europe, I can hardly pronounce one word and can't even read their alphabets but you always find a way.
Of course Scandinavia most people speak English as well but I guess you don't want to hang around there. with a phone you have instant translations offline also. So I wouldnt let language be a barrier. It makes everything more interesting.
I left when I was 16, I was scared for a while at borders and what have you but once I took a few planes and had my id checked by police and at borders I realised no one cares. I thought they might ask like permission from my parents or whatever but no. Of course I had no one calling the police saying I'm missing or anything. Would you? I don't know when you are legally allowed to make your own decisions in Norway. If it's a problem maybe you can find something online and convince your parents to let you go and do it. A charity or something in a country youd like to travel.