How do international patients find clinics in Korea?

Hey everyone, I'm Thanh from Vietnam. I'm considering getting a few aesthetic procedures done in South Korea, but I'm a bit worried about finding a trustworthy clinic. Since I don't speak Korean, I'm not sure where to start to feel confident about it.

I'm wondering what do foreigners usually check before choosing a clinic? Should I look for places that offer English or Vietnamese interpretation services? And during the initial consultation, what questions should I ask to better understand the treatment process?

I'd also like to know if anyone has had a consultation where the clinic didn't seem professional? How do you avoid unreliable places? Does anyone have any experiences they'd like to share? Thank you so much!