Anyone else babies are too afraid of the outside world?

Hi mummies, any 8th months old are still afraid to venture out. For example, they’ll still cling on you and is too afraid to enjoy the situation/environment? Even with people and places. Its like they are an introvert when we’re outside but when at home they’re very extrovert. Even when the people around them are not touching/playing with them, but upon looking at any person from a distance they’ll cry out of nowhere? Will they grow out of this or should I be concern?