I was taught as kid that what I have to is to say (and be) sorry. What the other person does is not my responsibility. Some people can't take apology and there's not much you can or should do about it
Always nice to buy something super niche. You search YouTube and there's 3 50min videos from random nerds who have devouted all their lives on that topic
And I'm using the word 'nerd' here with the highest respect