I have explained my dreams so far. What you see with hallucinogens is a dream, not an afterlife or a previous life. This time, I will reveal a nightmare.
 
You have a scary experience in your nightmare . In it you are at the forefront of war, are attacked by others. You are sweaty when you wake up. What did you see in it?
 
I remember nightmares well. 1, I ran around the battlefield. 2, I was shot by a soldier in Paris. A few years later I found a dream scene in a TV drama.
 
1, BBC Drama 'Downton Abbey' https://www.youtube.com/watch?v=oAXboV8cWs4
2, BBC Drama 'Les Misérables' https://www.youtube.com/watch?v=isQGHwWyJ6k&t
 
Part of the nightmare is the movie and drama tragic scenes. There are also news accidents and funerals of relatives.
 
How to find out nightmare days and places
Using the radio wave technology of the Japanese underground society, you can identify the time, place, and persons of your dreams. You remember your dreams. At that time, you emit radio waves to the part of the brain that recalls the image. You detect the reflected frequency. That is the dream frequency. You analyze it and find many things. Please ask the Japanese for details.
 
Summary
The nightmare is to see the misery of the future. About 80% of them are others. The rest is yours. The future will change as you take action. Change the undesired future. Most dreams are experiences years later. You don't have to be afraid that it will happen soon. You should put up with being shown a horror movie while you sleep.