Question about Dreame L10s Ultra Gen 2

I don't have Wi-Fi at home and therefore haven't set up an app. I also didn't let the Robi scan a "floor plan". I switched it on with On and pressed the On button again. Then it started working. Without an app. At first it travelled all around the outside. Then it kept going back and forth in lines, even though my floor is complicated with angles and niches. When the job was done, he went to his basket. Can't complain so far.