I haven't expected the backrooms movie to be more of a psychological horror but from the beginning I fell in love with a way it was pushing more into creating a right atmosphere and using such an amazing ambient to create tension without introducing scribble-like monsters I expected to appear in like the middle of the movie
I loved to see Clark just walk around backrooms, to see how they've created that feeling of being lost in something so familiar yet so off. Of being scared somewhere in the back of your mind without knowing why or what you're scared of.
Some of the rooms (like Christmas tree room and the one by the end when Mary stumbled upon a piece of stairs above a giant hole through levels and levels of rooms or when she ran out of the house and found herself in a room that has a few of the same looking houses) genuinely made me feel something too. I can't exactly pinpoint what - some mix of curiosity and anxiety over imagining myself there, in the shoes of the character.
When there was the first creature in the Christmas tree room - it made me scared for a moment too, because at that point you're not really expecting anything to appear because the movie made you think that the main thing to be scared of here is to become lost in the labyrinth of doors and corridors.
The final chasing sequence? The whole time I felt the tension and it was scratching my brain sooo good, the first time we saw the main creature of these backrooms, the way it appeared right after what happened in the scene before, the way it was moving slowly and then the chasing sequence started
I just really loved the movie and especially it's ambience. It scratched something in my brain that hasn't been in a whiiiile by horrors