Single copter crash log. Could someone analyze it for me?

Could someone please look at this log and tell why he thinks the copter crashed?
https://drive.google.com/file/d/18sm2puWvMyPMftfSaxAfahiz3lnzknhG/view?usp=sharing

It’s my second crash of a new design. Takes off nicely and hoovers, but after a few quick maneuvers it starts oscillating and almost nose dives. The wind was about 7m/s.
Appreciate your thoughts on that.

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