Review Detail of Gabichu_Yeah in One Piece: I Am Psychopath [Completed]

This story is getting worse and worse, first he loses and is imprisoned for 100 years, he doesn't want to be cured, and he loses his strength, he can't beat big mom and neither can he beat kaido because of a cheap excuse. Now in volume 3 I'm sure any weak pirate could intimidate him. Really disappointed with the course of the story, the author promised something in the first chapter but each time he moved further away from his initial goal...