Koinè Dialektos (Greek) was a common language spoken by many people from Eqypt to Rome, and throughout the Middle East during that period.
There are ancient texts which say He knew more about the Hebrew language than even his teacher, who sent him home because there wasn't anything he could teach Him.
Certainly He spoke Aramaic, and since Rome occupied Israel, I;m pretty sure He knew Latin, and maybe even some Egyptian, since his family fled to there when He was very young.
Here is someone who could work miracles and traveled extensively. You telling me, He wasn't fluent in the 4 or 5, often used, languages of that time, when we have people today fluent in many more languages than that?
Think about it.
I would say it’s unlikely that he was fluent in anything but Aramaic, given that his family was not from the elite, educated class.