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.

once I was up at like 1:00 am or like 12:00 am or whatever, and I heard a noise from the kitchen that sounded like someone knocked over a bottle of ketchup or smth, and I knew no one was in there, so I assumed it was our cat or the many, many creaks that the house admits. after that, I only heard one more noise like that and it stopped. odd thing is, I don't hear it during the day.