“Behind the Mask: The Rise of Leslie Vernon.” It plays into horror tropes using "found footage. "

Also, “Digging Up the Marrow.” It’s another found footage, but it’s down to earth (in storytelling, not plot) with AMAZING practical effects and an actor who is way too hilarious to fit his role. If you like adult swim you’ll recognize him.

Edit:

Also, “Oats Studios” is awesome. “series of experimental short films that envision post-apocalyptic worlds and nightmarish scenarios” -imdb

SCP: Overlord by Evan Royalty is free on YouTube and a fun watch.

Also, people might be over it, but I don’t think they realize it’s being updated - Kane Pixels is making more “Back Rooms” content on YouTube aswell.