Siberia

A man flees from one world to another that is strange and cold. Furs and fires keep him warm; a cave serves as his shelter. He is a broken man who wants to be alone. But even isolation does not bring him inner peace. Once again, he goes on a journey, this time into the self. He explores his dreams, confronts memories and seeks out visions. The rare encounters with other people are in languages he does not speak, determined by bodies that fascinate him, and by types of love he explores and then loses. His journey becomes a dance with demons, but time and again it flares up: light.

(https://www.berlinale.de/en/programme/programme/detail.html?film_id=202010951)