I think really The Still Evening is not evocating solitude exactly, but I fell alone in this street, with the red sky closing the horizon and the mysterious lamppost.
Well, for one thing, the sky isn’t closing the horizon because there is no horizon. And lamposts, in general, really aren’t that mysterious. The only mystery would be what is casting such a bright light to make the lamppost’s shadow? 
As for the new image. Again, you missed your mark. The image is way too bright, for one. Solitude should express exactly that… solitude.
- The state or quality of being alone or remote from others.
- A lonely or secluded place.
The pillar doesn’t look ‘alone’ because you’re way too close to it and it’s too brightly lit. Solitude should convey more darkness, less light. A farther distance to the subject with more space surrounding it. As you have it now you’re right up there with it. So in reality, it’s not in solitude. It needs to be observed from a distance rather than up close. More open space around it, less light.
Also, the wire’s reveal that it’s not alone. It’s connected to something. Somewhere off the image is another pillar and they are related because of the connecting wires. Solitude is a scarecrow in a vast, forgotten, dead cornfield. It’s a lone bouy out at sea ringing its bell for no one to hear. It’s a single tree growing in a most peculiar place like the middle of the desert or high on top of a mountain.
I hope those will help you visualize your goal. 

