Dreaming of being chased by a child shows that your family life makes you feel depressed. These emotions in your life, such as morality, responsibility and guilt, make you feel very tired. You usually suppress your instincts too much, even to a certain extent, and you begin to be strongly resisted or retaliated by your instincts. You want to change your life now.
My personal opinion is for reference only, and I hope it will help you.