I don’t agree with your last paragraph. We face many crises today and to solve them is challenging our way of life. The political (far)right answers with simple, populist sentiments that will not solve anything: Just drive your car, just eat your meat, we need growth — look: migrants!
The left tries to explain very complex concepts, but all people hear is „you have to change your way of living“.
Thank you for the long and detailed answer. I know that the situation in Italy is very different to Germany (were I‘m from). Even from the outside it seems that the left struggles and keeps infighting for years now. The financial crisis has caused huge damage and they don’t have any answers.
In the end your last sentence is what it boils down to: They aren’t doing it right.