Mine is Silent Hill 3. Its subject matter revolves around the fears of a teenage girl, like death of a parent, puberty, unwanted pregnancy (with a demon fetus, no less), mirrors (THAT ROOM shivers), and stalkers. The atmosphere is so oppressive and I cant play the game without having something else playing in the background, its that horrifying. I managed to finish Silent Hill 2 last year, which was like conquering my own fears. One day, I’ll finish SH3. One day.
Not quite an answer to your question, but if you enjoy horror games but don’t want to be too spooked yourself, I highly recommend the OhItsRobinM channel on YouTube and Twitch. She plays horror games and is absolutely unphased. She makes them bearable to watch for me.
I subscribed to her thank you !