Replying to get sum recs as well hope you don't mind me
https://www.mangago.zone/read-manga/a_classroom_bereft_of_angels/
Multiple insane female protagonists.
https://www.mangago.zone/read-manga/pumpkin_night/
https://www.mangago.zone/read-manga/jinrou_game/
https://www.mangago.zone/read-manga/jinrou_game_beast_side/ (Sequel of Jinrou game)
The protagonist is submissive in the beginning but starts to lose her mind as the plot thickens, and story progresses.
https://www.mangago.zone/read-manga/misu_misou/
The protagonist goes crazy and seeks revenge after a tragic accident.
https://www.mangago.zone/read-manga/chi_no_wadachi/
Instead, it's a crazy antagonist but definitely worth the
read and mention.
Maybe this one?
https://www.mangago.zone/read-manga/head_over_heels/
But honestly no one is in their right mind in this one
there is lots~
https://www.mangago.zone/home/mangalist/1145002/
Tysm everyone!
Psycho female protagonist?