On the tower audio, wind was reported as gusting 35kts, vis 3,500m in showers, with previous reports of moderate windshear.
The crew reported going around, and crashed shortly after. The impact video shows an impact angle and speed only slightly less than another 737 incident in the same area in 2013 s://en.wikipedia.org/wiki/Tatarstan_Airlines_Flight_363
It would seem to be vertigo caused by rapid acceleration in night, IMC..perhaps even the additional acceleration from a windshear go-around. It's happened plenty of times before unfortunately.