What do I struggle with

I struggle the most with pitch. I struggle the most with pitch because i usually sing outside of school ,such as when I am in the car, very deep. But now i am trying to expand my range and reach the high notes. So I will have to start singing high most of the time i possibly can in class. And now in my free time, i will instead singing the usual things that i listen to, i will start trying to sing higher, and more formal music to expand my range.