@Ruby8, as others have said, welcome!
Let's start with the biggie first: It's so hard dealing with this as a teenager. To make matters worse, there are a bunch of us old farts (I'm 54) hanging around telling you what to do. We often forget that well, we've forgotten what the world is like, what your plans, goals, joys, fears, etc. are at that age. So we will with certainty give you some advice that just isn't right for your life.
That said, you are in the right place to learn how to manage your health. The great news is, with some basic habits and awareness, you can live a very happy, fun, healthy and long life.
We have a teen group here that you should tie in to. That's where you'll get some of your best advice. I'm 110% certain that @MarieB will post with a pointer after I mention her in this post
Now, all that said, how high is your BG running? At your young age, there's a lot more "wiggle room" before we get really alarmed. This is not the say that normal BG control isn't the goal, and very important, for young diabetics; rather, the urgency, and therefore the degree of anxiety and worry, are blessedly more relaxed because your body can handle it better.
That is, as long as you're not running too high.
So let's start with what you're actually dealing with in terms of the severity of your control issues. Also just as important is how you're feeling physically, as some people are more sensitive to moderately elevate BG than others.