Hello, Bionkid! Welcome to Wikivoyage.
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I appreciate your post to Talk:Riyadh (which I signed and moved to the end of the page for you), explaining your edits to the Riyadh article, but one thing that's definitely not OK to do is change the standard subheading of "Understand" to "Introduction" or any other word(s). Please have a look at Wikivoyage:Big city article template, which shows the standard subheadings of the article template used in the Riyadh article. These subheadings are part of this site's house style.
But more importantly, please keep editing. Saudi Arabia is an undercovered country on this site. If you know some of the less-covered cities in the kingdom, perhaps you'd like to edit the articles about them.
All the best,