You are 17 which means you have the luxury of time. Not time to waste but time nonetheless.
Get your advanced education, start flying gliders, start a part time job, save for your PPL then take it from there.
Plan on 6-8 years of hard work and dedication till your first airline job.
You’ll meet people along the way that will be helpful and you’ll meet people along the way that will hinder you.
Make your own decisions accordingly.