Since moving into my in-laws last February, I've always felt that there was a presence around. They have an altar for their idols and I am firm believer that those have always attracted ghosts/demons/etc.
The other night, I was up late playing the PS5 and from the corner of my eye, saw a dark figure run down the hallway towards the alter where the idols are. I went to bed after that.
This wasn't the first time seeing a 'shadowy figure' run passed me or near me. At my parents' previous house, my family would always see a figure run up the stairs from the front door. My dog always faced that part of the house too.
It's interesting. I can't tell my wife because she's scared of this stuff. But I've already talked to my daughter to let me or her mom know if she's a ghost in the house. She understands because she told us of her experiencing a 'scary' following us from the car to our apartment door two years ago.
Also: If you're into Bigfoot lore, Max Brooks' Devolution is a good, entertaining read about Bigfoot.