To remove Navigation from Blog Page (List/Overview page), you can use this to Website Tools > Custom CSS.
body[class*="type-blog"].view-list { div.header-nav-item, div.burger-inner { display: none !important; } }
To remove Navigation from Blog Posts, you can use this CSS code
body[class*="type-blog"].view-item { div.header-nav-item, div.burger-inner { display: none !important; } }