Why are some menus created for authenticated users not displaying? Whatever menus created for authenticated user, some menus are displaying and some created menus are not displaying.

If I login as admin, it shows all created menus and its child menus.

Why is this?
Some of the links are not visible to authenticated user, because the URL you provided to respective menu links are not accessible to authenticated user.

Example: Suppose menu link is Add Article and URL is /node/add/article. So here if authenticated user not having Article node add permission, then in such case Add Article will not be visible to that user.