Q: went to move an app and it disappeared from view

Use the search function on your phone to locate the app:

Use Search on your iPhone, iPad, or iPod touch - Apple Support

Look in folders or other home pages. Also try a Forced Restart. Hold down the Home and Wake/Sleep buttons at the same time for about 15-20 seconds until the Apple logo appears. You will not lose anything.

From what you are describing - and assuming you didn't inadvertently delete it - it is likely on an alternate home screen (swipe left-right from the home screen to view them); or it was placed over another app and is not in a folder (swipe down on the home screen and type the name in the search field. If it is in a folder, the search results will indicate which one).

Glad to hear....