Australia is lucky because we don't have as many people. Our police are able to be well trained. Does that mean they never have missteps? Of course not. The training though goes a long way to make sure people police aren't having to shoot to kill constantly.
We still have guns, weapons - even more dangerous than both is the prevalence of "King Hits" - people don't even need to carry a weapon when you can just one punch people to death. Police have to deal with that daily and still, police shooting deaths are rare. Rare enough that they make national news and are a massive deal with they do.
If they do shoot, they shoot to disarm. That is usually a massive deal.
Training only goes so far though. When the plebs are like "nah fuck the police" and the media/education is like "yeah fuck em", how can you even police that? If society wants to not die, then maybe it should try abiding by the laws. Stop being such assholes and just accept law is law, change it through the right channels.
But they don't and the media continues to pat black culture on the back and excuse the violence away, instead of getting tough and saying hey, you want to not die? Then stop being so violent. No, instead it's encouraged to resist and generally discard laws that you personally don't agree with. If everyone does that, then there's no cohesive lawful society. It's just a bunch of people picking a choosing what they want to do.
As an example - In Tokyo, you have police boxes. The police in these boxes don't do a whole lot, but if you're slyly jay walking across a side alley at night and you hear the familiar sound of the police whistle and the stomp of a wooden stick out of the dark, most people will be like shocked and sorry. Because being law abiding is a thing most people want to do. They aren't going to yell "YEAH FUCK YOU" to the cops. That doesn't mean people don't break the laws, it just means that society respects laws as a culture/whole more so than in America. There's more shame attached to breaking the law.
The lack of shame in America has caused people to be more resistant. More resistance means police having to be harsher. Harsher police lead to mistakes, lead to more violence. People resist harder, violent culture is praised. More police, less training, more violence, more corruption, more autistic people like Antifa rise up.
I don't honestly know what America expects, but it won't end in "less cops, less laws". It's at a point where they can't use less force, because the people aren't willing to quit being violent, lawless cunts.