Is there a floor cleaning robot recommended in Korea?

Hello, I'm curious if there is a cleaning robot in Korea that cleans the floor really well. Most of the ones I've seen so far just sweep or mop the floor. What I'm looking for is a robot that properly scrubs the floor. And it would be great if it doesn't connect to Wi-Fi or map the house. There are a lot of hacking and personal information leakage issues these days. If anyone has tried a cleaning robot that meets these criteria in Gangnam or Itaewon, I would appreciate recommendations or sharing experiences. I'm especially curious if it's easy for foreign residents to get and what the price range is.