I try my best, but the coach finds fault with everything I do.

我已经尽力了，但是教练仍然百般对我做的每一件事挑剔。

For heaven's sake,I try my best to make myself fit for them,but why should I deserve being left behind?

看在老天的份上，我已经很努力地让自己融入集体了，但为什么我还是落得冷落一旁的下场？