If you can't work in oz / nz or europe due to work visa issues then it is obviously extremely unwise to spend any money on flight training in those countries. Especially at those very expensive schools you mentioned. They can't find you a job because you have no work permit, and it will cost you a lot more money to convert to a second licence when you go back to your home country.
What country do you intend to work in? With a name like Imran I guess you're Pakistani?