The devil is the personification of evil. He is Man. And so is God.
Devil worship is when man subdues himself to selfish desire, and draws boundaries.
Evil and Good reside in the garden. The garden is Man. To come out of the garden is to be estranged from Man. To hate, to kill, to destroy, to steal. Cain psychology.
That's why God didn't kill Cain. And instead, lol, pressed Cain's pituitary and made him so big, like Nimrod, and built Civilizations. Governments. Cultures.
Hence the worship of Oke, Joccana, Witchcraft, Corruption . . . you can add to the list.
So yes. Devil worship exists, and is accountable for death, whether on the road or in the house. Everything has a reason, a deliberate intention, in the form of spirits that transcend space and time and include even the dead. 'The God of Jacob, Isaac'. Who are thus Living.
The Prophets must cling to the ancient of Days as the foundation of wisdom, and truth. Devil worship is a forgetfulness, a neglect, a disparaging of the being of goodness.