Which first level directories in Linux should be owned by user?

Today, I have accidentally noticed that the following directories of the / are **owned by user**, rather than root: - /home - /lost+found - /media - /mnt - /opt - /snap - /srv - /swapfile - /var I have no idea how that could happen. It seems only logical that some of them with the obvious exception of /home should be owned by root. If so, which ones? On the other hand, the Lubuntu 20.04 x64 system and installed software run both normally. I do not face any troubles at the moment. Should I follow the _"If it is not broken, don't fix it"_ approach?