I’m trying to find this game please help

I’m looking for this game about a boy who must outwit and a monster who later turns out to be the boys interpretation of his drunken father

You're looking for Papo & Yo.

Jesus was that ever a depressing game.

Eh, depends on how you look at it. Drunk dad gave his kid a fantastical plaything. Kind of like Totoro.

That depends on how you look at it, it looks theoretical though.