You need help. Everyone who shares the house must feel OK about having a dog in the house. Dogs naturally live their lives in groups and most are very unhappy if they are left alone in a yard. They don't want a big yard to run in half as much as they want the warm smell of you when you are away, and your face to kiss when you are home. If you can't keep the dog in the house it is a bad idea to get the dog. Keeping a dog outdoors most of the time fails more often than it succeeds.
Everyone who shares the house must be willing to learn how to help teach the dog good manners, and not confuse the dog by using the same words to mean different things. And you will need help if you are sick, or if you need to be away for a short time.