Photography is like fishing...
I remember trying to fish when I was a kid. I sat at the edge of the lake in Roundhay Park, little fishing rod in hand, watching the float bobbing up and down on the water. I seem to remember that I sat there for hours, patiently changing my bait when I thought it must have lost its "attraction", and waiting for that bite, that tug, that fish I'd one day catch. But it never happened. I never caught a thing on that lake!
I learned a lot that I still use today in my photography.
To catch the shot you have to be patient. You have to wait, and wait sometimes for a long time. And sometimes, if the gods of light are not playing that day, you might never get the shot. But other times, just now and again, you'll catch it.