Secondly, you want to get the app shortcuts in one place ... Click “OK” on both windows after that, and the desktop icon ...
Can’t unpin icon from Taskbar in Windows 11/10 If you can ... If you delete the app shortcut from the TaskBar folder, it should get removed from the original Taskbar as well.
or go to Get more themes from Microsoft Store to Browse themes. Alternatively, you can also change themes in various other ways to fix the issue when you see the broken icons in Windows 11.