Homeless /no home
Not entirely horror... But you won't regret give it shot if you like this stuff
https://www.mangago.zone/read-manga/unhinged/
https://www.mangago.zone/read-manga/an_uncomfortable_truth/
both pretty popular but i think for a good reason ლ(´ڡ`ლ)
these are maybe something you might want to read
https://www.mangago.zone/read-manga/girl_that_can_see_it_pixiv/
https://www.mangago.zone/read-manga/ajin/ this one has an anime adaptation
https://www.mangago.zone/read-manga/sweet_home/
No yaoi, yuri, smut I need pure horror please.Hmm romance is okay I think. I can take recs that is popular but probably I read it before just drop whatever you want even if it's a meh for you I'm craving horror, psychological today