if you've written some story and marginalized voices are critiquing it, you should be interested in what they have to say and listen/signal boost instead of getting defensive.
everyone has internalized shit and if people want to point out how it's coded in your work, that can help you unlearn it. this discussion is valuable to you
same thing applies to transphobia, ableism, sexism, etc.
I know it hurts when you feel that someone has "read your work wrong" and sees racism that you didn't intend. it hurts when the message you're trying to send isn't received. but that's on you, not the audience. you need to learn how to convey your ideas within the broader cultural context. and that means getting educated. "I didn't know" won't cut it
this is maybe tied to the illusion of individualism that we all have. we all wish we could be bias-free and see the world objectively. but in reality we are unable to see certain things because of our place in the world.
the only way we can see certain injustices is by listening to the people who experience them. the only way we can see our internalized racism is when others point it out. we should all start taking it axiomatically that BIPOC know what they are talking about when they talk about racism.