Welcome to VV, and well done being vegan for so long in a place that may not be the most vegan-friendly!
That said, I visited northern Italy a few months ago for two-day meeting (staying at a hotel near Venice airport and then a hotel in Trieste), and was pleasantly surprised with much of the food I was served. (I warned the meeting organizers in advance, though.)
I've spent quite a lot of time in your beautiful country. My favourite place is Orta San Giulio. It's perfect, so don't tell anyone about it! I was vegetarian for over 30 years and changed to vegan a year ago. I love Italian food and like to try to adapt the Italian vegetarian recipes to vegan ones. Melanzana Parmigiana is my favourite dish but I still need a good vegan parmesan cheese.