Your English is better than my Polish.
Have you contacted LOT? We're mainly Americans and training is done differently here than it is in Europe. I know Lufthansa picks people to be their pilots and then does all their training. I don't know if LOT works the same way.
There are many pilots that have spent a lot of money and then found there are no jobs or only jobs that pay so little it will take 5 or 10 years to pay their training costs.
I would say start small. Is there a glider club near you? There may be some airline pilots there you could talk with.