Ts, as syag told you, we don’t believe that the tzadik will help us. Maybe his tefilos are purer, maybe he’ll be meorer rachamim, etc, but Hashem is the one who does the yeshua itself. Asking a rebbe for a bracha is not the same as calling out in this world for a deceased rebbe to help you. That’s davening, that’s making a request, and that’s deification. Big, gaping, canyon of a difference
I’ve been going to rebbehs my entire adult life; i believe that they can daven for me, that they have siyata dishmaya, and some have ruach hakodesh. Nothing more.