A lot of people are getting confused by one of the changes that Apple made in iOS, the method for deleting apps. Previously, you would tap and hold any app icon, then wait until the icons wiggle, then tap the little x on the corner of the icon.
In iOS 13, this is different. When you tap and hold an icon, you no longer see the icons wiggle. Instead, you see this:
Tap Rearrange Apps, and you then see the wiggling icons:
The word “rearrange” is a bit confusing, because most people simply want to delete apps, not move them around.
If you press, hold, then move an app’s icon, apps immediately switch to wiggle mode, and you can quickly reposition it, or just tap the x icon to delete.