What I must do to join a team? In my case Italian team.
You can search for a club and request membership.
This article will help.
If you are looking for a race team to join, facebook (unfortunately) and discord are good spots to check for teams looking to recruit.
A club don`t necessarily have anything to do with a team tho?
If you are on zwiftpower, all team`s have a join team button there.
And most likely a Facebook page.
Thanks everybody I manage to join club Italy