Hello
Here is my point of view:
1. UFO:
Now, we do not now solve if it is true that extraterrestrial Aliens are visiting the Earth really. Let's say, theoretically, that they are real. I have read many articles and some books on the subject, and I have noticed that witnesses report similar experiences. My personal result: what happened during the fatal night of the Dyatlov has to do nothing with Aliens. It seems that the Dyatlov group lived a few hours after they left the tent. And the whole chain of events from the tent's escape, their rational behaviour at the fire and at ravine, as well as waiting at the fire, does not correspond to the alien attack. And I have never heard that Aliens killed people and such many people at the same time.
My answer is no.
2. Paranormal activity (Ghost, Demons):
I have been interested in paranormal things for a long time, and as in the case of Aliens, the chain of events at that night is not responsive to paranormal events.
My answer is no.
3. Yeti
I'm not sure they exist but if we accept it theoretically that they exist, where are traces in the snow? Where are the traces on the bodies? Why did food and things remain intact in the tent? And also, the chain of events and, in particular, the long waiting time at the fire and the building of the den does not indicate their chasing/stalking by anyone.
My answer is no.
4. The Mansi people ot Army
See the point 3.
My answer is no.
5. Rocket testing/fauilure
No traces of debris, stupidity testing rockets in the area where it is known that there will be tourists (their move in the area and the hiking trail was planned long time before at the university and was approved). My answer is no.
6. Thus, the only thing left is a natural phenomenon. And so far, it is a phenomenon unknown because up to now the Dyatlov mystery is still unresolved. I personally take seriously the presence of orange balls that are reported by many witnesses. Whatever the natural mysterious phenomenon is, I have no idea. But the phenomenon had to create a pressure wave that caused a serious injury to the three at the ravine. I doubt they would fall down into ravine as Zolotarev camera stayed intact. Ivanov claimed that some force from the air selectively attacked the three, but I do not believe it was controlled by some person or Aliens. At the same time, I cannot imagine that any physical phenomenon would also selectively attract them. It would be an incredible coincidence ...
My conclusion:
some natural unknown phenomenon.