There are three questions that a street photographer should ask of themselves
.
What am I seeing that makes me take this picture?
Why am I processing it this way?
What do I want people to get from this picture?
I can't intuit the answers for the first two pictures.
In the first, I see a guy looking at a newspaper and don't get any more out of it than that.
In the second, there are two people, faces hidden, putting something in a mailbox.
The third has some possibilities, I think.
Viewers get hints from where the photographer places things in the frame, what is close to the edge, what is in focus, etc - and the success of a picture depends on how the photographer uses how people see to manage their expectations.
In the original image, nothing is in important spots (the thirds), there is a lot of space up top, the crowd is included completely (implying that it is important) and it is almost in focus, the acrobat's foot is semi-obscured by the crowd.
It is not obvious what we should be looking at - because the picture is giving confusing hints.
If you crop this so that the space is taken off and the crowd is clipped a bit, that gives a hint that the crowd isn't important.
The cropping elevates the shadow to the thirds and it becomes the focal point - and it is the interesting, and most clearly visible part of the image.
Do your post processing to make the hints the viewer gets seem coherent.