I do know applying for Australian citizenship has gotten easier. I do not know too much about it as I was able to apply by descent but this depends what year you were born. The biggest thing is making sure you have a job/work and somewhere to go etc. making sure your financially sorted out as you can not receive government assistance payments unless your an Australian citizen
Hi! You only need to have Permanent Residency to get government support, not necessarily a Citizen. https://www.servicesaustralia.gov.au/residence-descriptions?context=51411
I immigrated to aus. My case is diff than yours tho as i am not a US citizen and idk if i can be of any help but pm me if you like to know more.