The fact that cops can take a still from a video and identity a partial tee shirt logo and track it to Etsy to find the person who set a police car on fire should tell you that it’s not that they couldn’t find your stolen property, they just don’t work for you.
My mom’s house and car got broken into several times when I was a kid. My bike got stolen. Cops were called, and the only thing we ever got back was the bike, stripped, because someone tipped mom off and we drove over there and confronted the thief. Cops never helped.