Most of these have depression so this might not be exactly what you are looking for but some that I can think of rn are these
https://www.mangago.me/read-manga/will_you_let_me_stay_here/
https://www.mangago.me/read-manga/only_kind_to_me/
https://www.mangago.me/read-manga/solo_for_two_mature/
https://www.mangago.me/read-manga/grieving_you/
https://www.mangago.me/read-manga/the_world_without_you/
https://www.mangago.me/read-manga/black_mirror/
https://www.mangago.me/read-manga/doppleganger/

anyone got any recs for mangas / manhwas where the mc or ml has some sort of childhood trauma, kinda like litc, and / or mc or ml with some form of personality / mood disorders