Life is all about probabilities, you can do everything right and still lose (however doing everything"right" is nigh impossible). You lose if they have a better candidate, you lose if their department is suddenly not in need of the position, etc.
With that mentality, I don’t bother with CVs, and just use the time saved to apply to more jobs or maybe some kind of relevant project.
I’m in jail because I was not in the sudoer file