Adopting an Australian child may never eventuate...we had family waiting for YEARS
I believe when they 1st applied, the number of children given up for adoption in 1 state was 5 for the whole year...with thousands waiting.

In the end, my family adopted from outside the country.

Also, to even adopt an aboriginal child, you also must have aboriginal heritage.

I would dare say you would need to be a citizen to even foster children in Australia