Begging for the foreign horror movies I watched when I was young

I don't remember all of it, just the whole movie, this person or ghost. Love to kill. The victims were all hung with ropes in the museum or on the roof of the house, and then their skin was peeled off. The weapons used were similar to the primitive weapons used by the Predators. Humans didn't have such iron weapons. The people and the police never found the murderer. And the murderer was still invisible like a ghost. It was a bit of a change in color. It should be a movie from the 90s. I saw it on TV when I was a kid. The film was not bad! I hope everyone can help me recall the title? In the film, people and the police found the weapon he used to commit crimes (steel fork)... (Just like the steel forks used by Predators)!