It's not really about evidence.
Look, how often do I say, "The Truth is God" and "The Ultimate Reality is God"? How often do I point out that to deny this God's existence is a confession of nihilism?
Yet, who among these atheists will acknowledge God? None of them will. So naturally, they are nihilists.
You can't convince a nihilist of Truth because they don't believe in Truth. They will make pretense of being reasonable, they will use arguments they don't really believe in, they will present anything as evidence for the sake of sowing doubt. The point is not so much to lead anyone to The Truth. Rather, the nihilist simply acts drag everyone down to their level. It is all about destruction, nothing productive.
The important thing to realize is that a nihilist doesn't have conviction about anything. It is an embrace of arbitrariness. If they feign conviction, it is always to tear something down. Oh, you think you are so moral? Well, I will feign a moral highground to silence you. Oh, you think you know something? I will feign having knowledge in order to silence you. It's all about censor. Destruction.
Nihilism is the doctrine of negation. It is death worship. Nothing about it is intended to be edifying.
Hadn't you heard? Only a fool says in their heart there is no God. I wouldn't expect much from fools. At best, someone who doesn't know any better might come to the realization that they have been tricked into embracing nihilism. This only happens if the peraon who has been tricked actually does believe that there is Truth. Nihilists like to make appeals to facts and truth in order to lead people into what is ultimately a worldview absent of Truth.
Never underestimate the craftiness of the devil I say.