First off I'm a huge horror fan, especially if something can actually scare me and make me paranoid, and secondly I love a good story and mystery and these YouTube channels have plenty of them. If you're also a horror fan I highly recommend checking these stories out. Also I've found a YouTuber that analyzes these channels and makes them a little more digestible and tries to make sense of them. I watched his videos after finishing the horror series, which are still ongoing. I'll link these channels below in case you'd like to check them out for yourself if you're not already familiar! I recommend watching them in order, from oldest to newest.
https://youtube.com/c/MandelaCatalogue
https://youtube.com/c/GEMINIHOMEENTERTAINMENT
https://youtube.com/c/ALEXKANSAS (Monument Mythos)
https://youtube.com/c/LOCAL58TV
https://youtube.com/c/Wendigoon (the channel that goes in depth with these stories, he has some other really neat content too!)