Hello there, fellow Italian!
I haven't made a localized version of my comic yet, but from what I've noticed, the general consesus re: comics in languages other than English seems to be "it's very difficult to market a non-English comic on English speaking platforms"
Sadly, platforms for us Italians to post webcomics are basically non-existent: I think Webcomics.it still exists nowadays, but... it looks a bit like a deserted land, to me? D: then there would be Tacotoon and Jundo, but from what I could understand they act as publishers and do not allow self-publishing on their platform.
The only platform I know of that includes a proper filter for multiple languages so far is GlobalComix. They don't have a whole lot of Italian comics as of now, but the option is there. Other than that, you can post your comic in Italian on Tapas/Webtoon/ComicFury. All of these platforms definitely have some Italian comics, but... yep, building an audience is very, very difficult. You'd definitely need to do a lot of promotion in Italian speaking communities to redirect traffic to the site/platform of your choice. I wouldn't underestimate the power of Facebook for this! I found plenty of Italian comic artists on there, plus there are groups you can join where you can meet other artists and promote your work 