Random thought; by any chance, would it be cheaper to get Mavic Air in Japan?

Totalled my mavic air today Seeking for advice.

Bought it only 3 months ago. Flew less than 20 times.

Just now was the first time I flew it in:
1. urban area - damansara
2. night time

Before I take off, set RTH, confirmed it's on GPS mode. So I launched it.
When it flew up to ~100m high, suddenly errors appear on my phone screen saying something like "transmission signal lost", "can't transmit image", "vision sensor not functioning etc".

Then it just lost control and flew towards a office building. Crashed onto the wall, dropped down from ~4 storeys high.

Surprisingly, body is still intact, lost 3 legs. I am still able to connect it to DJI assistant and retrieve the logs.

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Perhaps I am wrong, my understanding is that without sufficient lighting, vision sensors will not work, which means that automatic obstacles avoidance would not work. But it doesn't cause the drone to lost control and fly towards somewhere without control right?

Currently all I have is the .DAT file gotten from Assistant App and a broken drone. What options do I have? Thank you.