Italy's system that worked so well up to the Belgium game completely fell apart without Spinazzola as it relied on one fullback, him, playing as a winger while the other stayed back and formed a back three in possession. They can't replicate it because Emerson and Di Lorenzo aren't almost wingers and they keep trying anyway. It is a mess.
It has gotten to the point where winning the Euros as they did, rather fortunately in the end, has put them in danger of missing out on the next tournament. Just a wild turn of events.
At the same time they do still have enough talent to potentially win the tournament next summer with some tweaks should they make it.