A VPN for Australia will improve your privacy by many factors.
IP Protection:
VPN can protect your IP address from being revealed, which will protect your identity and privacy. It will also protect you from being tracked by your ISP or the government.
Data Encryption:
VPNs also encrypt your data with military-grade encryption, which will protect you from hackers and thieves. That will keep all of your data safe and secure.
DNS Leak Protection:
A VPN will also protect you from DNS leaks, which can be used to track your activities and identity.