- https://www.mangago.zone/read-manga/usagi_no_mori/
- https://www.mangago.zone/read-manga/hishakaishindo/
- https://www.mangago.zone/read-manga/oni_to_tengoku/
- https://www.mangago.zone/read-manga/hitotsu_shikanai_mono/
- https://www.mangago.zone/read-manga/boy_meets_maria/
(these all sort of place a heavy emphasis on the inner thoughts, emotions, and mental processes of its characters)
I'd also recommend J no Subete ( https://www.mangago.zone/read-manga/j_no_subete/) if you haven't read it already. Even though it's tagged as a bl, I wouldn't consider it one, but I'm recommending it anyway cause I find it such an interesting psychological manga.
Can y'all recommended me some good psychological BL manhwas? It's been so boring lately and I'm really picky