I speak English and can only say a few phrases in my family’s historical language (though, I’ve gotten some lessons from home and school on pronunciation). My surname is sometimes mistaken for a similarly spelt English one–and I don’t want to constantly get it mistaken–so would it be cringey to pronounce it in its original language?
I have a Latino surname, I say it in kind of a “half-Spanish” accent that’s easily achievable by non-Spanish-speakers.
If I’m talking to someone official on the phone I say “Last name is (name), spelled (spelling)” so they get it right.