But I upgraded to macOS Tahoe, and now you’re gone. I’m realizing how much you mean to me. I’m at a loss. To quote Matthew Sweet, “I’m out of my mind, out of my mind. Dreaming of you.” ...
To use an iPad as a second screen on a Windows 10 computer, you'll need to use a third-party app like SplashTop.
You can change nearly any app icon on your iPhone or iPad using the Shortcuts app, and then hide the original icons in your App Library.