Blogger template comes with navbar which can be useful because you can place useful link like your contact form, about us, privacy policy and so on.

Navigation bar helps your visitor to find relevant pages on your blog easily and increase your blog page view and reduce the bounce rate.

Blogger navigation bar is a horizontal navigation bar that can be found in the header of your blog, depending on your blog design, the navigation bar can be found in the left-hand side or right-hand side. In this tutorial, I will show how to remove your blogger navbar.
https://craftmultimedia.com/how-to-remove-blogger-navbar/