Shattered phone found at dog park… and I guessed the passcode

I found a suspicious phone at the local apartment dog park (which few people come and go from) and guessed the password. The most recent text was from 4:30 pm and said you’re disgusting, the camera roll was mostly an older woman, but then most recent pic was a young dude. All his or her recent calls were from unsaved contacts and there was one outgoing call to Caesar’s sports book. What do you suspect? I left it there to see if someone would come claim it. Going to check for it tomorrow. It was near a bench so maybe it fell out of someone’s pocket. It’s also shattered though and seems kinda empty, so it seems likely that it’s a burner. However there’s a dumpster right by the dog park so why not there???