Potty training takes time and accidents are to be expected at that age. She is too young and inexperienced to know to alert you, and by the time she feels the need to go she probably can't hold it long enough to get outside. It sounds like you are doing all the right things; just make sure to take her out often and regularly and keep an eye on her.
Welcome to the forum! We'd love to see puppy pictures
Welcome to the forum! We'd love to see puppy pictures