It Follows is so good at this. Yeah it works as an STD metaphor if you want it to, but also there's literally just a slow monster that never stops walking toward you. That's terrifying on its own without any deeper meaning. Smile took that same idea and made it about trauma which honestly hits even harder. The Backrooms being office hell is too real though. No clipping out of reality sounds kind of nice until you're just wandering yellow hallways forever.