I felt the exact same way you’re feeling last year, and I guess I feel the same right now too. My advice would be to focus on something else. One thing I really regret is focusing too much on getting in, which affected my grades, my personal life, and other aspects of my life.
But remember, GETTING INTO A PRIVATE HIGH SCHOOL DOESN’T DETERMINE YOUR LIFES TRAJECTORY!
Just calm down, relax, and focus on something else. Be happy you submitted your apps, since not everyone can do that!
Good luck!