Some channels I use for this: Action Button is indescribable, Fredrik Knudsen, Folding Ideas and Oki’s Weird Stories do excellent deep dives, JCS Criminal Psychology, Dreading, Dave’s Lemonade are all excellent channels focusing on courtroom testimony and police interrogation footage,

If you have some specific interests like space or history or war I could recommend some more channels, I just picked the ones that I use the most personally. If you only take one recommendation then it should be Action Button, trust me these are so much more than just video game reviews and can be listened to many times thanks to their density