The usual way to change the sort order in any list is to use the "drag and drop" method. You can find a tutorial for that here: https://www.yellowwebmonkey.com/hot-to-sort-in-any-list. However, sometimes...
The way Joomla used to be set up, you needed to have a menu item if you wanted a page on your site to have a short URL path. ...
You must have something to assign to the menu so if you must create the article, form, etc first then add the menu item.
Login to your website. From the Control Panel, choose Menus and choose Main Menu from the dropdown
