Still sharing location on WatchOS and iOS despite 'Share Location' off

I turned off share my location. I did that by navigating to Settings -> apple account -> Find My and turned off share my location. I am part of a family. It seems that both my phone and my apple watch that is not celular still sends location every few days. In my partner find my app it for example it shows apple watch last update 3 hours ago and the last location. Another example the phone was last update location 2 days ago and showing the location. Why if Share location is off my devices are still updating location from time to time and why is not completely off? How can I stop the device to send this updates so my location si completely private?

[Re-Titled by Moderator]