All of my apps in a particular category do not appear on my Home Screen even though I did not delete them how to add back?
How to recover apps that are not appearing anymore
Question marked as
Use App Library to search the app you are looking for, see this Apple article:
Organize the Home Screen and App Library on your iPhone
Organize the Home Screen and App Library on your iPhone - Apple Support
If you have find the apps, tap & hold on the app, then drag to the Home screen & drop it.