My one & only piece of advice to you is:
Go for it!
I know a couple of pilots (good friends of mine) who've done it, through a pilot sponsorship scheme...
Nowadays it's a rare occurance, but it's not an impossible(!!) one...send out a spontaneous application letter to every single airline in the world & you might be lucky!
Aircraft manufacturers have also, in the past, sponsored "wannabe" pilots ..
What's the worst that can happen to you? A "thanks,but no thanks letter"...at least you've tried!!
If you're young enough to join the Air force in your country, that's also a good starting point! In my airline we have a relevant number of pilots who've starded their flying career in the Air Force & later on made the transition to civilian airlines.
Also, several banks will lend you some money, as a student loan scheme..you pay them back when you start working/flying.
Where there's a will,there's a way, right? Don't give up on your dream...good luck
p.s. of course, if you seat "on your posterior" thinking that there's no way of accomplishing your dream ( whatever it might be) you'll never accomplish it,that's for sure!
You should only give up on your dream once you've explored "every single avenue"..I speak from my own personal experience, believe me!