All dogs seem to do better with exposure to other aspects of life, other dogs, and people too. The French Bulldog should never be a mean, aggressive or a vicious animal. It is often recommended and a good idea to take your Frenchie visiting and to various places. This helps your dog be a better dog and not possibly overreact out of fear of the unknown. It also builds confidence and character in your dog. It gives you and the dog an easier time when separated or when traveling together.
Your Frenchie should NEVER be penned up for long stretches of time. He or she needs to be a part of your life.