How to survive in korea being a kyoppo

Hi everyone, it's been more than a decade since I visited my relatives and my parents wanted me to visit them since they are getting old. I am nervous and anxious since my Korean is not that great and their English is limited. I am very whitewashed and there are certain things about korean culture that I do not feel very comfortable with, such as the excessive obsession with lookism, classism, etc.

I tried to avoid my extensive family as much as I could since we are not culturally compatible but this time I have to see them since I am the only one in my family that I have not seen anyone for more than a decade LOL.

This also includes my stay in Korea. I might stay for half a year due to my health; it is way cheaper to do it in korea than my homeland country.

Is there any advice for me? how do you deal with the cultural barrier or nonsense comments they say about values that do not align me as a kyopo?

Also how do you make friends with other Koreans or find other kyopos? it would be a lonely experience for me since I cannot speak Korean really well, plus I do not know where Koreans or foreigners usually hang out. ( i heard that it's usually in hongdae and itaweon?)

I would greatly appreciate your advice.

Thank you!