I personally think some of the icons used in Moodle are not really user friendly, the Cog icon is the worst especially if you do not see it as it is so small and insignificant.
It’s even worse in the Front Page with Editing on you can almost miss the cog icon that represents the button to click on to reveal tge Text Editor on the Front page where you can add lots text, images, videos, and other interesting things to brighten up your site.