Well, getting a hitch receiver in the States from Alfa for a Giulia is impossible, but I hear in Europe they can be found. UHaul has their own models though.
That car can tow a small, unenclosed utility trailer with a trials bike, no issues. It's been said the 2017 Giulia towing capacity was 1700kg, but I don't think I would want to tow that heavy a load, and I certainly would not want to tow anything with a any significant frontal area.
(2019 AR Giulia here too)