If you are searching for a youtube channel that posts weekly documentaries on natural disasters and true crime, I'd like to reccomend a youtube channel called Bad Day HQ. I've been following their channel for a quite some time to get all the info and etc. that i am looking for or just only to educate or entertain myself. If you need something like this you can try it out here for free:
https://www.youtube.com/baddayhq