The navigation menu, more simply called menu, is a feature related to the WordPress theme. It allows users to create navigation menus on their site from Appearance > Menus.
It is necessary to think carefully about the structure of the menus you want to set up because they will determine the fluidity of the navigation on your site. A bad management risks to make your visitors flee if they do not easily find what they are looking for. It is therefore also better to focus on simplicity.