Work manager and Location updates best practice

Question

I'm trying to get some location updates and save them to the database.

My problem is that sometimes it works, sometimes it does not.

What I do now is I start a Work Manager like this:

val uploadWorkRequest: PeriodicWorkRequest =
            PeriodicWorkRequestBuilder<ListenableLocationUpdateWorker>(
                15, TimeUnit.MINUTES
            ).build()

        WorkManager
            .getInstance(this)
            .enqueueUniquePeriodicWork(
                PERIODIC_LOCATION_TAG,
                ExistingPeriodicWorkPolicy.REPLACE,
                uploadWorkRequest
            )

ListenableLocationUpdateWorker looks like this:

val repository = Repository(context)

private var fusedLocationClient: FusedLocationProviderClient =
    LocationServices.getFusedLocationProviderClient(context)

private val locationRequest: LocationRequest
    get() {
        return LocationRequest.Builder(Priority.PRIORITY_HIGH_ACCURACY, 5000).build()
    }


@SuppressLint("MissingPermission")
override fun startWork(): ListenableFuture<Result> {
    return CallbackToFutureAdapter.getFuture {

        fusedLocationClient.lastLocation.addOnSuccessListener { lastLocation ->
            if (lastLocation != null) {
                val locationCallback = object : LocationCallback() {
                    override fun onLocationResult(locationResult: LocationResult) {
                        fusedLocationClient.removeLocationUpdates(this)
                        repository.Insert(locationResult)
                        it.set(Result.success())
                    }
                }
                fusedLocationClient.requestLocationUpdates(
                    locationRequest,
                    locationCallback,
                    Looper.getMainLooper()
                )

            } else {
                it.set(Result.failure())
            }
        }
    }
}

Main problem is that sometimes there are no location, or work manager just haven't started.

Now it works only when I open the app, so no background work here.

How do I make it right?