scared kid holding a cross

I was watching a YouTube video, heard a door opening, and shouted "Hi", but no one responded... I cautiously walked too the door kinda horrified, but no one was there :/ I replayed the YouTube video, and heard the same sound -_- it came from the video XDD

*to the door

I was vibing and same thing happened to me lol

My personal experience? Well I was just sitting on the couch and I heard a creak from my room. I walked in there and saw my dog running around. SMH.