Is there any devil or ghost?

Answer 1

yes there are lots of ghosts - they are the peopel stuck between the living and the dead.

there is a devil he is God's enemy

..................................................

It is difficult to say with any certainty exactly what ghosts are, but since every culture and tradition seems to have some experience with ghosts, there may be some reality to them. One theory is that the powerful emotions associated with violent death or trauma may be recorded in some way on a particular place, perhaps with a form of energy science has yet to understand.

Devils are a different matter. There is quite enough evil perpetrated by humans to explain experiences blamed on devils. All people tend to "project" their own evil fears and wishes outside themselves. Those projections can take on a life of their own as more people believe in them. In this sense, devils are quite real and do a lot of harm.