MarsHall Actually, it is possible to turn Live Photos off for good.
If I’m understanding you correctly, you turned Live Photos off in the Camera by tapping the circular icon at the top right?
To do it properly, go to Settings, find Camera, and under Preserve Settings, make sure Live Photo is turned on. 
This way, your camera will remember your preference, and you won’t have to switch it off every time you open the Camera.
That should do it!