Most children are naturally creative
Most children are naturally creative. From the time they start to bang things together or draw on a piece of paper, they are creating something, even if you see it just noise or scribbling, they are learning. So long as parents and other adults around them encourage them, and do not restrict them other than for safety methods, children will not lose their creativity.
Of course, some are naturally more talented than others, and this will emerge as they develop. But everyone is creative if they dig deep enough. Sometimes it can be well hidden if a child’s life is too structured, or if they start formal education too young. But in a free learning environment, with plenty of safe tools and resources, a child will explore many kinds of creativity. You might sometimes need to redirect creative attempts: if a child is about to draw on a wall, you might want to pin up a large sheet of paper or suggest they draw on some paper. If they are about to bang a glass table with a hammer, you probably want to swap it for a plastic table and plastic hammer. But don’t discourage the child’s wishes to create something new.