I would have been fully ignorant today and it’s scary to even think about that. I do not have a high opinion of my very recent past self.
Please give yourself a little grace. You did the best you could with the awareness you had, at the time. There's nothing wrong with you, yourself, maybe you can have a low opinion of past opinions.
I'm not trying to nitpick you either. I just think we're too hard on ourselves as human beings, struggling to grow.