How to remove an icon that was already deleted from Finder ?
I deleted 'Microsoft Word' from Finder and I emptied the trashcan. However, an icon of the app stayed in a gray color like before it completely downloaded so I reinstalled it from the Appstore and deleted it again. The app was disappeared. Then, I tried to update 'keynote', 'pages', 'numbers' , and 'GarageBand' but it said my Apple ID cannot update them due to some weird reason. I deleted those four apps and reinstalled them according to what internet said. 'Microsoft icons' appeared immediately on the Launchpad and did not disappear or remove from my Mac even I kept dragged them into the trashcan.
MacBook Air 13″, macOS 10.15