Your piece has some interesting ideas and thought behind it - sci-fi isn't an easy genre to tackle! It could, however, do with some editing to correct grammar, spelling, and punctuation, and to tighten up the narrative. Misplaced words scattered around your piece (assumed to be typos), affect readability and the natural flow of your submission. There is also a sense of redundancy in a number of scenes - the same point is made in a number of descriptive ways, and scenes are therefore unnecessarily drawn out as a result. eg: your opening scene makes various references to the fact that your MC is unable to move. One carefully selected sentence could instead convey the same information with far greater impact. Your dialogue presentation would also stand out more if you used speech marks to make it clear when someone is speaking and when the identity of the speaker changes.
Your MC arrives on the planet at a predetermined time in the future to bring a solution to a problem that the planet's inhabitants are facing with a dwindling life force. We do wonder what the MC learns about himself on his journey and/or how he grows through the experience. It's important that you create both a strong story and character arc to hold your the attention of your audience.
We hope these points of guidance will help you to hone your writing skills.
Please keep writing!
Thank you for writing in The Ink Well.
RE: The sands of time - a fantasy tale