If you need to communicate with someone, YOU need speak in way they will understand.
It’s your problem, not theirs.
Lots of folks know their local dialect. It’s one of the ways they can identify Outsiders.
Don’t bundle all Latinos together. Northern Mexican, Ecuadorian, and Dom Republic Spanish are so very different they sometimes don’t understand each other.
Government Tagalog is way different from Ilocano or other Visaya dialects.
All the Euro languages are the same way.
“Government Tagalog is way different from Ilocano or other Visaya dialects.”
My GF and her family are from the south and central: Davao and Cebu City. I can’t understand Tagalog but she has taught me all of 3 or 4 words!