Most horror movies are meh, but one... Lights Out (2013) was a horror film that genuinely terrified me. It's only a few minutes long, but it's more frightening than the jumpscare-laden slasher movies of the era ever could be. It's phenomenally subtle in its setup, showing how the slightest thing "off" in the dark can portend unimaginable horror. Check it out: https://m.youtube.com/watch?v=lykiTPUbtgs