Healthcare in Australia is like going to a big doctor's office where you and your family can see the doctor and get all the medicine you need. The government pays for most of it, so it doesn't cost as much money as it would if everyone had to pay for their own doctor's visits and medicines.
When someone is sick, they can go to the doctor and get treated. If they need medicine, they can go to the pharmacy and buy it. If they need to go to the hospital, they can go there too, and they won't have to pay a lot of money for it because the government helps with the cost.
Everyone who lives in Australia can use this healthcare, even if they don't have a lot of money. The government uses the money they collect from taxes to pay for it, so everyone can get the care they need, no matter how much money they have.
So, healthcare in Australia is like a big doctor's office that everyone can go to, and the government helps pay for it so everyone can get the care they need without worrying too much about money.