It Is Unfair

I don't know why, but it feels as if there are no nothing is fair things in the world. Take my part-time job for example: the job is very hard because I have to stand there for a whole all day. Afterwards, I am tired and exhausted, and my salary doesn't make it seem worthwhile still made me disappointed. Then I wonder how this place can be like that - unfair and unappreciative? Does this world offer any opportunity to our the little people poor guys to get a leg up what they want?

This is a more natural way of expressing what you want to say.

Get a leg up means to have a chance or some support - like someone helping you climb over a fence.

It is Unfair

I don't know why, but I feel like there are no fair things in the world. Take my part-time job as an example, the job is very hard because I have to stand there for a whole day. I was tired and exhausted, but my salary still made makes me disappointed. Then I wonder how can this place be like that,unfair and unappreciated. If the world has any opportunity to our little poor guys to get what they want?