i am so embrassed when i see all these stories of koreans being racist

I don't know what you mean. You say you got discriminated as a long term expat in US. First of all, why should Koreans care about you? Second of all, in Korea an expat who speaks Korean is showing up on subsidized terrestrial television and celebrated, funded by Korean taxes.

I know you're trying to guilt trip people because of your woke delusions maybe. You should go to Japan and try to solve racism by giving wholesome hugs to zaitokukai members, or go do the same at some neonazi rally.

I don't understand why some Koreans always feel the need to be "morally superior" to their own detriment. If I face racism, I probably get more satisfaction from returning the favor than self-victimizing and pretending to have the moral high ground by returning kindness to people that hate you.