Hi there. Looks like this happened 4 days ago? So it's probably hiding in the grass somewhere, unless someone else found it.
Have you tried the Find My Drone function? It's available in the menu that you can reach before going into the main "Go Fly' screen. It may work since I see the flying mode briefly switching to GPS a couple of times.
If that doesn't work, you can try what I did when I lost and found my drone. Go out there at night with a bright flashlight. The top cover of the Spark may show up better that way, since the shadows are so dark in sunlight.
You can also calculate the maximum distance from your starting point based on the speed in meters per second that you can see in your screen recording.