Powasky, I think we are in the same boat, I also like street photography, sometimes super critical on myself and I am on a learning curve, so you may take my C&C with a pinch of salt. I will not write about technical details, because I really do not care about it at this stage. I hope more seasoned photographers will give you some advise there. I will write about, in my view, the most important things.
1/ The Idea: what is great is that you have ideas, many camera owners start with shooting flowers and finish with shooting cats. ( Do not want to hurt anyone, i am just allergic to cats

I am not joking , I can not spend more that 10 min a room with a cat. )
So having actual ideas is great! From what I see I can guess that the idea here is to show that some American kids live in a world full of rubbish (and probably because of that they are full of rubbish when they grow up). Good idea and quite abmitious. I may be wrong here. But if i am right, to be honest with you, I am not too convinced. For one simple reason: as a foreigner I can safely tell you that the USA in general is a squeaky clean country compared to many other places of this world. We have seen so many images of poor kids playing on a mountain of garbage somewhere in Bangladesh, so a picture of an American rubbish bin does not really impress. In other words if you want an impact, the rubbish must be so spectacular, it should be squeaky clear you are in real ****. So bad luck, but you have to dig deeper in your country to unearth some real gems of this theme

I am sure though you can find it

. I am joking here but I hope you see what I mean. Sometimes you have an idea, you find something that can be intellectually presented within this idea or theme, but it does not nesessary mean it really has an emotional impact on others. So you need to look at it unbiased and ask youself - is it just my intellectual exersise or it really has an impact?
2/ The Composition. I think you are trying to put way too much into the frame. You know, personally I LOVE chaotic, complicated compositions where there seemingly is no main subject and my eyes wander around before I grasp the beauty of a fragile balance of all those lines and objects and colors and people.. and I think WOW. But this is is the realm of a true artist, we mere mortals need simple, clear compositions for it to work. Clear focal point, lines of vision, balance, complementing colors.. The closer and tighter you compose your shot, the easier it gets. The easier to convey emotions of a main subject(s), less distractions, clearer composition and technically easier to work with light/shadows and colors. If you look at your photos - all the people there apart fromone man are just small figures and we can not see their faces. There is a LOT of distractions - reflections in the shop windows, some object in the grass, signs, amputated figures and cars, and more cars, empty pavement, more people.. you may think: it all adds to the composition. It does not. As I said it takes a lot of skill to create coplicated compositions that actually work. Exposure wise the first shot is way too dark on the foreground and contrasty so I can barely see anything, the second shot, on the opposite, is too flat, overexposed and lacks any shadows that could add to the drama. The reason was obviously the harsh, unforgiving sunlight. Yet again - a tighter, closer shot would help to avoid these problems and create better contrasts.. I would say, again, from what I have learnt from my own experience - start with closer, simpler shots - one face, one emotion, one empty bottle, - and then make your way to more complicated compositions. And read books on composition and design, it really helps.
And do not go down on yourself: you are not a painter, you are a photographer. And a photographer is only as good as an image he can see. If it is just a garbage bin, it is a garbage bin, and more often than not you can not do anything about it, it is not your fault.
I hope it helps.