I have an inquiry about lasers and am curious about their effectiveness, cost, and reviews.

I’ve recently become interested in skincare, so I’m inquiring about laser treatments. I’m looking into the Gangnam area, but there are so many types that I’m having trouble deciding which procedure to get. For those who have inquired about lasers, I’m curious to know if the actual results were good and how satisfied you were after the treatment. In particular, are there any procedures that aren't too expensive and have a clear target audience? When inquiring about lasers, should I check the treatment time, recommended number of sessions, and frequency rather than just the price? I’m even more conflicted because I’ve read reviews and it seems the effectiveness and duration vary from person to person. I would appreciate it if those who have actually received the treatments could share the pros and cons, as well as how many sessions they underwent. Are there any specific questions I should definitely ask during the pre-treatment consultation?