Going to High School 😁

I am 14 years old! And I'm going to high school. I am lowkey scared because what if people look at me and talk about me! Me and my best friend are going to the same high school, but what if I can't find her what if i don't have any classes with her, or have class with people I know or have lunch with people I talk to! What should I expect? How does high school work? I want to join softball but I'm afraid that I won't have time to do homework go to softball practice. How do people manage time management?? I need help/advice!