Recommendations?

https://www.mangago.me/read-manga/brutal_satsujin_kansatsukan_no_kokuhaku/
https://www.mangago.me/read-manga/pumpkin_night/
https://www.mangago.me/read-manga/sweet_home/

"The Horizon"

I don't really think its too bad just traumatic asf

If you are starting, check Junji Ito, he is probably the most well known horror mangaka (and he’s quite good at it), and Uzumaki is probably his best story, so check it out if you haven’t