If you’re a really busy person, I would advise against a puppy as you won’t have time for him. Puppies take up a lot of time because you have to mold them into the right behaviors as they grow. What you probably should have is an adult dog. I’d recommend a low-energy breed that has already been housetrained and is friendly. Breeders sometimes have young adults for sale and then there are always rescues and shelters. If you decide to go with a breeder, make sure it is a reputable one.