Is it a problem if a foreigner reviews a product in Korea?

Hello! It's been about a year since I moved to Korea. I am currently living in Itaewon and I want to upload Korean product review videos on YouTube. However, I don't think highly of the product, so I want to honestly share my opinion. Could there be any legal issues if I do this? Has anyone experienced a similar situation? I've looked at reviews from other YouTubers, but they all seem to only say positive things. So, I'm a bit worried... I would appreciate any advice! If anyone has experience or knows a way to avoid legal issues, I would be really grateful!