I study English all the harder because I want to find a better job. or "My grades are all the better for working hard." I am none the sadder for living a poor life. Or "for being poor". How about: "His unreliability is due more to incompetence than to malice."

1. "I study very hard to learn English because I want to find a better job". 2. Not certain of your meaning here. Could you tell me, specifically, what you mean and I will try to tell you what makes sense? 3. Correct. Assuming you are comparing the two. (He is more one thing than the other.) Hope this helped. If not, let me know. Also, I am learning Japanese. So, we could become friends to help each other if you would like.?