Kind of depends on your phone coverage wherever you are and how comprehensively you want to mitigate risk.
Find My Friends (and presumably the Google equivalent?) will fetch your location on demand, which works great unless you’re in a ditch out of signal.
Most modern GPS devices and apps/services such as Strava, RideWithGPS, Viewranger etc will allow you to share your location, and they’ll do so by uploading your location/track at intervals, which means you’ll at least have a last known position up until the point where you lose signal, and (in some/all? cases) a breadcrumb trail which will indicate your direction of travel.
On Android phones I rigged up a thing using Tasker that would respond to a text message with a link to Google Maps, which was again on-demand, but would function with just an SMS-capable signal rather than a data connection. I don’t believe Apple allow apps to read SMS messages so I don’t think Workflow will do this. (I may be wrong.)
If you want to be located without a phone signal then as above it’s a Spot tracker.
Caveat: it’s quite a while since I fannied about with this stuff, we just use Find My Friends these days 🙂