What do you tell a disarmed population (stay in your homes and pray you are not slaughtered)?
Australia is not a disarmed population. Americans have been fed a lot of lies about guns in Australia, apparently for domestic political reasons, and for some reason it seems to be difficult to get the facts understood there.
There are millions of firearms legally held in private hands in Australia. We do have our fair share of stupid gun laws (universal registration, and licencing among other things) but they didn’t disarm us. Law abiding citizens can get a gun licence quite easily if they choose to. Not enough do, in my view - but I’m certainly among those who have all the firepower I could ever want if I ever felt any reason to need to have it.