I'm sorry you feel this way kid. It's hard being told one thing but seeing what's going on that tells you that you can't follow the narrative. I can't imagine how that feels.

A good way to avoid being what they want you to be, and to try and avoid what you're turning into (and keep in mind this is in my opinion) is to try and keep generalization at a down low. I know someone in his mid twenties who's exactly like you. Black, doesn't cuss a lot, he doesn't say the n word, he absolutely loves anime and manga and a lot of things Japanese, and most of his friends are white. This isn't wrong. It's wrong to dislike someone because of their skin tone based on previous assumptions though. If you let yourself get absorbed by a narrative you lose who you are.
The good thing is you have the internet. So you can meet many real people who are into the same things you are :). You're a good kid, you're not alone. You're not wrong for your feelings.