https://www.mangago.zone/read-manga/the_planet_walks_alone/ this one is not psychological/horror but it's also really good
https://www.mangago.zone/read-manga/true_education/
https://www.mangago.zone/read-manga/inu_yashiki/
https://www.mangago.zone/read-manga/boku_dake_ga_inai_machi/
https://www.mangago.zone/read-manga/desire_diary/
https://www.mangago.zone/read-manga/save_me/
https://www.mangago.zone/read-manga/efforts_never_betray/
https://www.mangago.zone/read-manga/an_uncomfortable_truth/
https://www.mangago.zone/read-manga/prison_lab/
Horror list
https://www.mangago.zone/home/mangalist/1038439/
Psychological/horror school life story with a male mc? I’m bored and wanna read something new