I really like it, and I think you have some real skill as a writer, it's hard to craft a world like this (!)
...a few people have mentioned that the plot is cliche but I think the bigger problem is cliche language. I'm talking about description like "the sunlight glistened on the morning dew", for example. It's not that it's a bad or ugly sequence of words or an unappealing image, but it just feels a bit like something that someone else has already written. I know it's an impulse to reach for the word or description that is floating right on the top, but writers must fight it! Consider description that is a little stranger, so that it feels more fresh and, ultimately, more precise. I think lines like "crackling engine" are great, because who would think to describe an engine as crackling...
Another piece of advice: my teacher was forever suggesting with module c that we wrote about a very small intimate moment. Given the lack of time etc. it is usually, or always, more impactful to craft something small and detailed, like a conversation over a cup of tea, or the thoughts of a person as they fall asleep after some event, or a child's view of an interaction between their parents. Instead, your story takes up a lot of time trying to build up this whole enormous world and backstory. Not to say you can't have your dystopian world, but it should be in the background, not drawn out in expository language. Ultimately we care about people and their motivations and their relationships, and that is why we write and why we read. 1984, for instance, has a rich sense of setting etc. etc. but what makes it compelling is that it is about a guy, about loneliness, about love.
In general, I really admire your eye for world building, but I'd say leave it till you're publishing your 1000 page science fiction masterwork (you should! I would read it!) and in this unit think about leaving those details vague and instead sharpening your eye for small intimate moments of characterisation. This should also help with the problems others have mentioned about being confused.
More than anything, reading helps with writing, so if you're looking to finesse your expression I recommend that, obviously. Best of luck!!