Question: What can I do before my visitor visa expires if I need to stay in Australia?

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Temporary Visa Holders
What can I do if I cannot return to my home country?
section_content: If you cannot return to your home country, you need to maintain a valid visa
and engage with the health system when necessary.
Visitor visa holders should apply for a new visa before their current visa
expires to maintain their lawful status.
If a visitor has a “No Further Stay” condition on their visa (including 8503,
8534 or 8535) and less than two months validity remaining, they can request a
waiver of this condition to allow them to lodge a new visa application.
For information on extending a stay in Australia if you are unable to depart,
see Staying in Australia.
If you have worked in Australia and cannot meet your immediate living
expenses, you can access up to $10,000 of your Australian superannuation tax-
free in the 2019-20 financial year.

Reviewer feedback on this answer:
This answer relates to general visas, and applies to visitor visas as well.
This is a great response that is very comprehensive. It tells you what to do if your visa is expiring. It provides links for staying in Australia which has contact information and instructions. Very useful

Reviewer ratings:
Excellent
Excellent

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Bridging visa holders
I am a Bridging visa holder. Am I able to work?
section_content: You might be allowed to work in Australia depending on the conditions of your
Bridging visa. Your grant letter will tell you about these conditions. See if
you have work restrictions by using the Visa Entitlement Verification Online
Service (VEVO).
If your Bridging visa does not let you work, or has restrictions on working,
you can apply for another Bridging visa that lets you work. This is only
available in some circumstances and you will usually have to demonstrate that
you are in financial hardship.
Bridging visa holders who have been able to work while in Australia and cannot
meet their immediate living expenses can access up to $10,000 of their
Australian superannuation tax-free in the 2019-20 financial year.

Reviewer feedback on this answer:
This answer relates to a bridging visa, not to a visitor visa and therefore not relevant.
This is an acceptable answer because it tells you that you can try a bridging visa if yours is about to expire. This is basically what the question is asking about

Reviewer ratings:
Bad
Acceptable

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Bridging visa holders
I am a Bridging visa holder in Australia and my substantive application is pending a decision. What does this mean for my Bridging visa?
section_content: Your Bridging visa will keep you lawfully in Australia until a decision has
been made on your substantive visa application. If your substantive visa is
not granted, and you are unable to depart Australia, you will need to apply
for a further Bridging visa to keep you lawful.

Reviewer feedback on this answer:
This answer relates to a bridging visa, not a visitor visa.
This is a decent answer. There isn't a whole lot of detail here but does tell you that your bridging visa will keep you in the country legally. This is what they wanted to know

Reviewer ratings:
Bad
Acceptable