If you’re still studying, Australia has a student visa which then also allows a couple of years to stay and work after you graduate. And if you get work you can convince your employer to sponsor you longer term. And there are paths to permanent residency and even citizenship then.
Also there are tons of videos on YouTube about young people taking the plunge and moving to the here, from both the USA and the UK. Just search around a bit.
How many more letters do you need?