You're 19. You have all the time in the world to make your mind up, and then work to save the money to pay for it. There's such a thing as too young as well as too old.
If you're hell bent on aviation that's great but honestly I strongly suggest doing at least your PPL with money you've earned and saved yourself, to get a taste of what the training is like. Sure if there's a brilliant opportunity comes up to go fully sponsored then apply for it.
But if you're self funding then be very very careful, have a backup plan, and don't bite off more debt than you can chew, because make no mistake it is a gamble, there are a lot more wannabes than jobs out there.