@ Addison0998
I like the nonchalance of Constantine (2005), by Francis Lawrence with Keanu Reeves, Rachel Weisz, Djimon Hounsou, Tilda Swinton …, where evil is coming towards the City of Angels and our demon hunter averts the imminent hostile take-over of the world by the hosts of hell.
I don't think this film will give anyone a nightmare, except, maybe, the most devout believer.
But, maybe I simply do not relate to the conjunction of the two concepts of ′horror′ and ′supernatural′.
So, here's a horror film which dispenses altogether with this supernatural shenanigans:
Orphan (2009) by Jaume Collet-Serra