How do you find a trustworthy clinic as a foreigner? Tips for vetting?

Hey everyone! I'm planning a trip to Korea in a few months and I'm thinking about getting some aesthetic treatments done while I'm there. I've heard great things about Korean clinics, but honestly I'm a bit nervous about choosing one as a foreign visitor. Has anyone here gone through this process? I'm really curious about how you all vetted clinics before committing.

Specifically, I'm wondering: Do most reputable places have English-speaking staff or interpreters available? Should I be asking specific questions during the consultation to feel out if they're legit? And how do you guys communicate your expectations clearly if there's a language barrier? I'm not even sure if I should book something before arriving or wait until I get there to meet people in person.

I know I need to do my own research obviously, but any honest experiences or things you wish you'd known beforehand would be super helpful. I'm just trying to feel confident about this decision!