Which is the best immigration from Australia or Japan? The best place to live, thank you.

Australia, of course, is not much smaller than China, but its population is only 20 million+1 10,000, with beautiful environment, pleasant climate and stable society, which is suitable for human settlement (Melbourne has replaced Vancouver as the most suitable city for human settlement in the world this year), while Japan has a small land area and a high population density, so it is not easy to immigrate (what's so good about Japan? ! I hope these can provide you with reference.