Existential horror is a genre I don’t think has many takers. I suppose there are a few that could qualify, but none seem to “get it” enough to try. “Dragon Quest: Your Story” is one try though. A Priest once described horror media as “a celebration of ugliness.” This is true. Existential horror is a genre that could then easily be described as “a grieving over lost Beauty.”
St Charbel Makhlouf, Existential horror, “Elden Ring,” “Blade Runner 2049,” and how “Dragon Quest: Your Story” is the best horror movie I have seen.