u/Inevitable-Remote741

Okok, so this movie is from my memory, and i haven't seen it for a years, but it's on my mind often, and i haven't been able to find it no matter what i look for

A group of young adults are amater filmmakers and choose to do horror films. The scene starts out with the wo9men screaming or acting out before either the dude filming or her says it isn't believable.

Some point to another they get to this massive building and start to explore it, but things start to go weird in ways .

One dude is filming and hears noises, i think, and after some time, it is suddenly thrown from the 2nd story starwell window, i think.

Another one finds a weird homeless amn stuck in a bathroom channtin about a red door, either to find ir or to not open it, and they take the dude so they can find the door.

I think at some point the old man and the 3rd dude die, 1st dude could have killed them.

The main dude ( dude 1) who was filming at the beginning and the blonde are in a room and the man goes crazy, taking the camera and filming her while basically saying " you want to be an actress, this is what you wanted" and smashes her face in with the camera as we watch the lens break. He then goes towards the red door and our ending scene is camera recording ( i think cop dashcam) showing him walking down the highway and a police pulling him over and finding him covered in blood with all the kurder tapes he filmed in his duffle bag; he gets arrested scareaming about the door and the buidling