Tell your driver where you are
I've used this App on my Android phones (first Samsung 4 and now Samsung 8+),
for years now. It is great and accurate. It sends out a live location so that
your driver just has to touch it and their Google Maps comes up with the
directions to you.
We configure it for degrees, minutes, decimal minutes. I send SMS messages.
I don't have a recommendation for iPhones for a similar App.