Okay, a few things
1. It's never a good idea to start a story with exposition-dump, because readers genuinly don't care. Is all this backstory really necessary to set up the events of the following? And if so, couldn't you have summarized it in just a few sentences? I also suggest you read up on Conservation of Detail in literature.
2. I can see your attempts at creating dramatic tension at some point, but it always falls flat because of either a grammatical shortcoming or because of the order in which you describe things.
"Then the dark Polygan leader got imprisoned by Master Hand and Crazy Hand. But BEFORE that he dropped an almighty macguffin into space!!! ... somehow. Between being sucked into space and being imprisoned." That's not interesting to read at all. Similarly this sentence:
"But as for the invaders that survived, they tried to come up with a plan to stop the juggernauts real quick, but couldn’t due to the juggernauts keep on attacking."
You build up and release tension within the same sentence. That just makes it boring. How about you go into detail about the plan and then reveal that it doesn't work out after all. That way the reader gets much more emotion out of the story.
Try to think about the way readers perceive your story, and how you can format it to make it interesting. Also this ties back into Conservation of Detail, or rather, common sense, but things like "more deadly", "the most dark-ish purple shades", there is no way something can be more purple than something else.
3. Proof-reading. If you're not sure about some grammar, have someone else proofread it with you. Proofreading is essential. No one wants to read a text with spelling and grammar errors in every second word. It really hurts the flow of the story.
Of course you need to believe in things that aren't real. How else can they become?