Maybe try this:How in the hell can this annoying feature be rid of for good????
How to turn off Live Photos
From the Camera app, tap the Live Photos button to turn off Live Photos. A slash through the Live Photos button means that the feature is off.
The Camera app turns Live Photos on again automatically. To keep Live Photos off permanently, follow these steps:
Go to Settings.
Tap Camera > Preserve Settings.
Make sure that the switch next to Live Photo is turned on.