If I don't enable the public IP address, how can I access my virtual machine?

How can I access my virtual machine without a public IP address?

Linux:

For virtual machines running Linux-based operating systems, setting a public IP is required because SSH key pairs must be used for login.

Windows:

For virtual machines running Windows operating systems, you need to set an administrator password through a VNC console login. However, to access your virtual machines from your local machine, a public IP address is necessary.