Ask for the name of a horror film

It was a European movie. A man was chased into a house by a ghost. When he was outside, he met a little girl. There was a family living in the house. The man was holding something that looked like a pocket watch. It could suck blood and deal with ghosts. After their family discovered the ghost, they fled with the man. One of the women had lost an arm. Later, an old man inside became a ghost because he entered a room and was tricked by a ghost into drinking a drink. The little girl was reading a book in a room when a man fighting a ghost suddenly appeared on the page. Then, she also became a ghost. The man was beaten to death by the ghost. Only a woman escaped. She fought with a ghost and drank the blood in the man's pocket watch. Then, he vomited all over the ghost, and the ghost died. Later, she returned to the man's side and used the pocket watch to suck his blood before escaping.
At the end, when she was on the bus, a ghost chased after her. She dripped the blood in her pocket watch onto the small steps on the bus so that the ghost could not come up. Then the ghost said," Let's go to the next stop..."
It's a very scary and bloody film

Answer 1

A horror film could be called Paranormal Activity or Supernatural.