The first thing you’ll notice the best players do is probably what they say after they die:
“I should have done…”
They don’t blame their teammates or are wowed by inevitability.
The best players always learn from every mistake and look for what the correct response to the situation was.
It doesn’t matter whether they are actually correct, what matters is that they are looking for the correct responses after every mistake. It is most obvious after they die, but they do it constantly whenever they made a suboptimal response.
Then they move on. They don’t dwell on there errors. They assess, they postulate the correct answer, then get their head back in the game.