Part of the coaching should be drilling the players to take their time, gather their composure as best they can, and follow the same routine every time - even in training - so they have the best chance possible of reproducing their best penalty under pressure.
Looking at how players take them, from all nations, it is clear that doesn’t happen. Sometimes you get the very clear impression players are getting the ordeal over with as soon as possible, and they always tend to miss.
This is a bizarre lapse in professionalism in such a professional sport, especially for England when we know all too well how critical penalty shootouts are.