I would suggest trying Shortcuts, because Shortcuts are so phenominally easy to create, share, and modify that it blows my mind.

It took me all of 3 minutes to create a Shortcut that lets me message my wife with my ETA at my house when I say "hey siri coming home" (or use the Siri activation in my car) and then "yes" when she asks for confirmation to send it. Takes my current location, finds the route to my house, grabs the time, and plops it into a custom message that I typed up that's sent to my wife's iPhone.