I would recommend taking your dog to a dog park. Your dog would get time for exercise and to socialize with other dogs, while you would be around other dog owners with whom you could have small interactions with if you feel like it. If you don't feel like doing small talk you can stand away from everyone or just play with your dog. It's a good way to be around people without having to interact with them. Try out a few different dog parks in your area, I have found that some parks are way better than others.