It is not necessary for a bitch to have a litter or for a dog to be used at stud. For bitches there are very significant health risks from breeding and potential long term consequences. Dogs might be encouraged to be more sexually orientated and therefore more inclined to run off after a bitch in season. You would also need to be absolutely positive that you can find really good homes for all the puppies, no matter how large a litter is produced, and that you could take back any puppy that became unwanted throughout their life.
So breeding from your dog is not something to undertake lightly, and especially if you think you are going to make a lot of money out of it. If you do it properly you are unlikely to make a significant profit and that is why puppy farmers almost always cut corners.
If you are thinking of breeding your dog the first move is to have them checked by a vet. Ask your vet to pay particular attention to any possibility that there might be difficulty during mating or whelping. You should also ask whether there are any tests for inherited diseases and those should be done well before you are thinking of mating the dog.
You also need to ask the advice of a breeder experienced in the particular breed to find the best mate. The dog next door is unlikely to be the perfect match.