Forum Discussion
Unpost as News
How to unpost a page as news in SharePoint Online?
You can change the promoted state by saving the column in a view, using quick edit/edit in quick view and changing the promoted state to 0 abd save changes. This will demote the article to a standard page, note that if the page is being displayed in a highlighted content webpart it may require a site crawl to update and stop showing depending on your environment