Answer:
The statement is a complete sentence.
Step-by-step explanation:
The question is, do you need more information to understand what is said?
I think the sentence is just fine. You get the idea of what it means immediately.
For example if you had a sentence that said
Because I practiced throwing a curve ball, I struck the batter out.
and then you followed it with
Luck had nothing to do with it.
You should understand that I got the batter out, and luck had nothing to do with it.