I need a second surgery. Can I still get SMILE LASIK?

About 20 years ago, I had LASIK surgery because my eyesight wasn't good. For over 20 years, I've been able to see the world clearly and comfortably, and it's been wonderful. But recently, things have become blurry and I can't see well. The discomfort is beyond words. Can someone who's had LASIK before get it? What's the difference between the old LASIK and the new SMILE LASIK? There was a hospital event in Seoul where they were introducing a safe and good clinic, Gangnam Brand Eye Clinic. Is it a good place? I have so many questions. ㅠㅜ