Hi
I was once in your possition, and the answer is simple.
All you need to do is get a job! earn the money and save. Thats the way I did it, and thats the way most people without any cash do it.
You are 19 and have plenty of time, theres no need to rush. Finish your education, get a job and save.
It took me 8 years to get the £50k+ required for flight training, I saved virtually every penny I earned. Yes it was hard, I had no life! but if you want it enough thats what you do.
I was one of the lucky few that completed flight training completely debt free!!
Good Luck...