How do I connect this cables to my surface socket australia
If you know how the old light was hooked up, connect it in the same way, and ensure that all cables are suitably restrained (e.g. pinclips near the socket, or cable ties).

If you don't know, then this is almost certainly electrician time. It's likely that what's been done is no longer common practice, and possibly no longer legal. It's unclear simply from wire colours how it's hooked up; one would need to not just trace out how it is wired, but understand why.