It wasn't really a nightmare, but I was scared it was real, so when I woke up I was sooo relieved it wasn't.
There was this girl on a bike in my room, wearing neon clothes in the dark. I was sleeping, and I woke up when she started telling she could control my whole life. So everytime I did something in my dream, she changed that in a weird situation. I was watching little kids dance to a Twice song and in no time the song changed to a weird version and the girl appeared and said "yeah I can control your life you know". I was writing my letter for my first penpal from Canada and when I was finished she told me "don't try to send it to Canada, I can even send it to China or to somewhere no one will ever find your letter. I can even manipulate and change your texts to people. I basically hacked your whole life". I was so relieved when that dream was over and I was so impressed I told everyone in the house how weird it was