Alaikumussalam. I'm Moroccan so my family is muslim. And now I'm just 17, so I can't do much yet
It's true that Italy has a lesser muslim population compared to some European countries but fortunately there are a lot of islamic centers and mosques, not just in Milan alhamdulillah. I think just very very small cities don't have them.
Also there are over 1,3m muslims (+3%). Actually in Rome, the capital of Christianity, I heard there are a lot. SubhanAllah.
I think that, because muslims here aren't anough active in preaching as in some other countries like Germany, Engand ecc., the number of converts is rising too slowly. It may also be caused by racist politicians who are influencing people's mind.
I pray that the situation changes insha'Allah.