It is completely alright to admit when you’re wrong. Whether about history, cultural appropriation, even the very nature of a holiday or common phrase, when presented with new information it is totally cool to be like “oh, my bad.”
Admitting you’ve made a mistake doesn’t make you or your practice less valid. Because we’ve all been where you are, we’ve all made the same silly mistakes.
Just don’t be an rude about it and no one will think less of you.
It’s okay, honest.