I moved your post (and replies) to a new discussion topic. User's reporting issues with astuck icon on the desktop in 2021 is not the same issue as in 2017.
Please provide a screenshot of the icon stuck on the desktop.
If you've unistalled Flash Player note that Adobe's uninstallers do not remove any browser embedded Flash Player version (Chrome, IE/Edge).
- For Chrome: Per Google's Chrome Flash road-map Flash support was removed from Chrome in Chrome 88, released Jan 19, 2021. Upgrade to Chrome 88 to have the Chrome-embedded Flash Player removed from your system.
- Windows 8.x/10: Microsoft has released an update, https://support.microsoft.com/en-us/help/4577586/update-for-removal-of-adobe-flash-player, to remove the IE/Edge embedded Flash Player ActiveX Control. This support page has a link to the Microsoft Update Catalog, which contains 38 files for the different Windows versions and architecture. Make sure you download the correct file for your Windows version and architecture.