Is law and order good in Sydney? What safety issues should international students pay attention to in Sydney?

Is law and order good in Sydney? What safety issues should international students pay attention to in Sydney? Suggestion:

There are hundreds of thousands of overseas students and tourists in Australia every year, most of whom are in Sydney and Melbourne. The crime rate should be low, otherwise it will not always be one of the most livable cities (countries).

Carefully choose a suitable living environment and a good roommate, and avoid going to areas with relatively poor public security where there are many new immigrants in West Sydney or Southwest China.

Don't get too close to people. People here are used to not lending money, ID cards and cars to others, nor borrowing them from others. Money and cars can be rented by lending institutions and car rental agencies themselves. Don't be too far away (keep in touch but try to AA), and don't make friends or live together with people with complicated social relations or unknown identities. Friends of friends, people who go out to play and don't know their real names and addresses, etc. )

In Australia, if you obey the law and don't take shortcuts, your efforts will generally pay off. Don't need to spell the background, pay attention to your own strength.

Know more about laws and regulations before doing anything, and sign after reading all the documents. Don't have an invoice receipt or written proof in black and white because of acquaintances or convenience. Don't make some friends for some reason. It seems that you can make money quickly, pass exams, get identity, etc. And it is easy for people and money to be empty and get into trouble.