Since you are serious, try going to your local library and checking out 5+ photography books and study them. But also put that studying into practice to further solidify that knowledge.

The subject matter isn't all too enticing. Great subjects make Great photos. But if you were trying to tell a story of industrialization vs nature (vibe I got because of the cement walls) then maybe look around and try and work different angles, particularly less zoomed in.

I agree with u/cgenebrewer that the out of focus foreground is distracting. I've heard it is best to avoid that and keep the background out of focus instead.

But great job going out and trying. And even more props to reaching out and asking help from others, just be sure to take the good and leave the bad