Certainly in Asia people may be more polite about it… or you just might not understand when they use derogatory terms in their own language.
I’m white and I still hear people occasionally insulting me in their own language, thinking I don’t understand the words they use. It upsets me and it upsets my local girlfriend too. People are a*es and racist everywhere.
That said my experience with people in Asia has been overwhelmingly positive and that’s why I live here, even with the occasional rude comment and person taking a video of me while saying “botak”