Going Pro in Acting at 17?

Hey, I'm a 17 year old student about to graduate out of high school. Throughout my high school, i have been involved with drama and theatre.

I went from playing Mr. Green in Clue, Aladdin in Aladdin, Lumiere in Beauty and the Beast, to Ben in Descendants this year. I have accumulated a lot of skill in acting and in singing as well.

Many years ago, i had a dream of being an actor in movies or even in a show like stranger thing which is why i started theatre and loved it.

The thing is, i want to go above that level of "high school theatre". I want to become a professional actor. It's just out of many people who are actors, barely any make it which makes the movie industry a highly to impossible industry to make it in. i'm not planning to major theatre or acting in college as i will be majoring in a more stable career. I am very open to still exploring my talents to see if maybe, i can make it big. How can i become a star?