Need a serious help

[Yanji]

That was a complete answer. Thank you, I got a lot and have made my mind. But still one thing I want to ask you.
How would the state government sponsor me an immigrant visa if I score 8 in IELTS?

Each state government in Australia has an immigration website (just google for them) with a list of shortage occupations. This list changes all the time but if you can find one which sponsors aeroplane pilots, you can calculate the number of points you can get and see if you are eligible for state sponsored immigration. If you go that route, you'll at least know that the job prospects for pilots in that state is decent and you'll also be eligible for Commonwealth-supported places at Australian universities, although they are not guaranteed. I mention IELTS because I doubt it's possible to get the required number of points to immigrate without a job offer for a job on the shortage list without at least a Bachelor degree or maximum language points, which requires 8 on IELTS. When I checked Australian immigration a few years ago, I think the pilot demand was mainly in Queensland and Western Australia but I have no idea which states are sponsoring pilots right now or whether they're sponsoring them at all.