Four Personal Incidents: Light Anomaly, Doppelganger, Premonitory Dream, and a Dream of Satan

So, here are my stories:

1. I'm attaching a pic for understanding. As a teenager, around 14, I stayed overnight at my brother's place. My brother himself wasn't home, he'd gone off somewhere on business. It was already late and I started getting ready for bed. The door to the hallway was ajar and the light in the hallway was on. I turned off the light in the room, so light was coming only from the hallway. I lay down on the bed and see that I can't see the light from the hallway. I quickly sat up, the light appeared, quickly lay down and the light disappeared. Not understanding what was happening, I started slowly getting up, found the boundary where the light starts to disappear. But the light didn't disappear gradually, there was a clear boundary. I was fucking shocked, because in the space between me and the door there was no furniture, nothing else. I started waving my hand through the air in the place where the boundary was, where the light was cut off. After that I lay down and the light from the hallway became visible from any position. I got scared as fuck, turned on the nightlight and barely fell asleep.

2. Also at 14 I worked as a helper in a grocery store. One time I'm standing in the back room, washing rags after mopping the floor, and something made me look over my right shoulder. I don't know how important this info is, just telling it. And at the other end of the back room I see myself, but that me looked older and was looking at me very angrily. As soon as I looked over my shoulder and saw all that, the me who was standing at the other end of the back room immediately disappeared, just vanished. I got scared and jumped from the surprise. I didn't understand at all what happened then. I thought for a long time and didn't understand, but the story has an ending. Let's move 10 years forward. I'm 24 and I have a dream: I enter that back room, I see myself washing rags, the situation is exactly like 10 years ago. In the dream I decide to mess with myself and make an angry face. I start making an angry face and at that moment the me who is washing rags turns around. That's where my dream ended. Hell knows how this works, but the situation is at least strange.

3. I'm 15, school tomorrow, going to bed (I don't remember what day of the week it was, but let's say Thursday). In the dream I see myself going up to the 14th floor of some panel building and coming out onto a shared balcony. I look out from the balcony, look at the yard, look down. After that I turn around and see some dark figure behind me. No face, no other characteristic features. Just a blurry, dark, human (by feeling) figure. I turn back toward the yard, look down again and jump, and during the jump the ground the building stands on starts to look like a target. Right before hitting the ground the dream ends. I woke up in the morning and calmly went to school. Somewhere in the middle of the day I find out that some kid a grade below me, yesterday evening, about a couple hours before I went to sleep, committed suicide by jumping from the 14th floor of a panel building. And at the exact same place where I was in the dream.

4. The last one. Also about a dream, nothing to do with reality except for one acquaintance, but it was still creepy. I was 15, going to bed as usual. The dream starts with me meeting an acquaintance of mine, we start hanging out, chatting, ha-ha. Anyway, classic. We pass by some house, looks not old, but abandoned. My acquaintance got very interested in it and suggested we climb in and see what's inside. I, as a fan at that time of wandering around abandoned places, agreed. In the dream there was no fragment of how we climbed in, but in the next frame we're standing in the center of some big hall. And from the outside the house wasn't that big. By feeling, it's like the atmosphere started getting heavier and very quickly it got dark, not pitch black, but something close. At the end of the hall something like a throne materialized somehow. I stood frozen, and my acquaintance calmly, even casually, walked toward that throne. While he walked, he gradually turned into some demonic shit. He reached the throne and sat on it. After that he started talking to me in a demonic, low voice (a stereotypical voice, I'd say). Then a quote (but not complete, because I can't remember one of the important moments): "I am Satan or Lucifer. Call me what you want, it doesn't matter. I brought you here not for nothing. You are here to choose the side you will live with from now on. You have two options: either you leave and this is... I forgot, but I think there was something about pursuit, or you join us and we help you." After these words I'm still standing frozen, I can't physically say anything, but mentally I agreed to join him. He extended his left hand into the wall and a passage appeared there. At that moment the paralysis lifted and I walked into that passage. While I walked, the darkness around became as if thick, but some visibility remained. I walked on a wooden suspension bridge until I reached a similar wooden platform. As soon as I stepped on it, a bright light appeared under it. Because of the light I saw a lever on the platform, near the lever stood some, either demon or goblin, fuck knows, and in the middle of the platform was some kind of opening hatch. The principle is that you pull the lever, the hatch opens, and whoever was standing on the hatch falls down. After seeing that I walked to the edge of the platform and saw below an abyss engulfed in fire, and in the abyss itself there were many rusty, spinning, circular saws. It's clear what would happen to me if I fell in there. Then I stood in the middle of the platform on the hatch and heard my inner voice. I asked myself: "are you sure you want exactly this?". And, apparently scared of some consequences, I just left that place. How I left I don't remember. That's where the dream ended. I woke up in a cold sweat and in some wild panic. The clock showed 3 or 4 in the morning. I fell asleep again, barely. Funny fact: I never saw the acquaintance from the dream in real life after that, but I don't chalk it up to paranormal stuff, because we communicated very rarely and depending on circumstances. Apparently our paths just didn't cross. While I was writing the last one, I remembered that this dream happened to me exactly on the night of my birthday, that is, I was turning 15 that day.

It turned out to be a lot of text, but sorry, I tried to describe the sensations in as much detail as possible.