dumb luck

How much of it was just the dumb luck of having to guide the country out of its pandemic misery into a new era, and how much of it was voters seeing Democratic policies in action and running away from them?

"By the grace of god and/or dumb luck I’m still here," he said.

Because it’s clear that what happened was not a situation where the president was saved because of the scale of the Secret Service but by sheer dumb luck that he is still alive.

“Again, it was dumb luck, because we had all the ability to set type.”

There are various implications there, that if you don't succeed or you don't find wealth, it's your individual fault, rather than the fault of the system or dumb luck.