Sorry I posted my answers to the wrong section.
These are mangas that I don't really find messed up but it matches with what you are looking for:
Chi No Wadachi
Kasane
children
You Will Hear the Voice of the Dead ( I don't really think this is any psychological horror but the tags something otherwise)
Shokuryou Jinrui (Not really fucked up but ha...... reply
want to do trying to upload
want to do question
