I had a dream that I think killed by neighbor.
How does your neighbor relate to the dream?
Well, my dream was about death and my neighbor was in it.
While dreaming about death and having your neighbor die shortly afterwards is concerning, it is just a coincidence. The dreams that you experience have no effect on what goes on in reality. If you think that they do, then you are operating under delusional thinking and should speak with a therapist about your thoughts.
Okay.
I am sorry to be so harsh, but this is concerning. I hope you seek help soon.