How to socialize your dog

Daily Walks Are Key
Just taking your dog out to a public place and walking around will help him grow more comfortable with the world and people around him. From cars driving down the street to the mailman, the world becomes a little bit less scary once you’ve been around the block a time or two.

Keep your buddy on a short leash and get your exercise on—there’s a lot to see and plenty to smell. Take different routes, allowing your buddy the chance to meet new friends and experience a wide variety of sights.

Mix It Up
Expose your dog to a wide variety of people, from men and women to children, so he can get acclimated to the idea of people (who are much bigger). The idea is that if your dog only ever hangs out with one person, he may grow wary of anyone that isn’t that person, so it’s crucial to diversify your dog’s social calendar and make time for meet-and-greets.

Stay calm and confident if your dog acts scared. Don’t push, but don’t make a big deal out of skittish behavior, either.

Extract from https://www.rover.com/blog/how-to-socialize-dog/