Anyone believe in Ghosts ?

No, don't believe in them at all. And as for big foot, that was a hoax done by a farmer Down in Humboldt County. He made some feet out of plywood and then went walking around the woods dress up like some monster, The reason for it was to scare the coyotes away from his stock. He was on one of the talk shows a few years back telling the story of how and why he did it.