Languages everywhere

Hi i have a question for you.
Which programming language should i learn?
I'm studying C in school and started doing some python in my spare time
I also have a basic understanding of html/css/js
Which of those should i stick to?
I don't really like web development, only did it becouse my friend said its fun, i'm more of a app guy

I would wont
Wait until you're 21. Learn some English grammar and math before that happens.

If you want to make a living of your knowledge, sadly you'd have to walk down the web bullshite road, since it's going to be the only relevant thing in the next 5 years. You could also learn Java/C#/SEPPLES and maintain badly written ENTERPRISE legacy code and get hypertension, stress, depression and anus cancer while you're at it.