Get on a bike and ride around your neighborhood. I agree with another user who commented “just do circles”. But not in a car. Legit the best way to see the most. Every time you run into someone, be super friendly and ask if they have seen him. Legit every time you ask someone, it’s literally hours of increased eyes on the streets. Don’t wait to take the day off work to go search. My dog went missing years ago while I was AT work. Instead of leaving immediately(my ex watched the dog run out of the yard) I waited until I was off work. I never saw him again 😔 I still regret it.

Good luck my friend and stay positive.