How can I renew my expired foreign passport in Australia?
Youd need to get in touch with your countrys embassy for that. Best-case scenario, therell be one of those in Canberra, and you can go there and sort out a new passport. They may even do a consular visit to a city closer to you every now and again to make life easier. If theres not, then youd need to find either an honorary consulate or establish which embassy is accredited to Australia for your country. That may complicate the process with the pandemic, but theyll at least point you in the right direction.