Member Log In button limitation

Hi there. I have limited coding experience and I’m running into an issue with my site. I created member pages and added a “login button” for my members to log in, however, when they log in they are unable to navigate to the members-only pages I have created. I want to edit the log-in button to become a dropdown, this way, once they are logged in they can navigate to their account page, bookings, ect. Does anyone know the code to edit a log-in button? My other option is to add the member menu element, but I would have to add it to every page of my site because it is too large for the header. Thoughts?