Apps won’t move on iPhone 8+ when hard oressed
Apps won’t move on iPhone 8+ when pressed.
iPhone 8 Plus, iOS 12
"Touch and hold any app on the screen until they all jiggle." "If you press firmly, instead of jiggling, you might see Quick Actions for the app. Tap outside of the Quick Actions list, then touch and hold the app lightly to try again".
How to move apps and create folders on your iPhone, iPad, or iPod touch - Apple Support