Friends iPhones Unable To See My MacBook Pro's Location on FindMyMac?

I do not have an iPhone, but I do have a Mac Book Pro. I recently shared my Mac Book's location with all my friends I had saved in my Mac's message's app (I have their iPhone numbers). I also asked them to share their locations with me. I can successfully see their locations (their iPhones), but they cannot see my location (my MacBook) on the FindMy app. I'm not sure how to solve this problem, because my Location Services are turned on and I can see their locations. I can see my own Mac's location on Find My (it fully shows up), so its just all my friends that cannot see my location (on my Mac's messages app it says I have "shared my location" with them). P.S: This is not too different from someone tracking their Mac and owning an iPhone simultaneously, so its not like this is some new situation. My cousins have their iMacs and MacBooks on Find My, etc.