'Tragedy' in the Bible

Consider someone who is alone, having neither son nor brother. There is no end to all of his work, and he is never satisfied with wealth. "So for whom do I work," he asks, "and deprive myself of pleasure?" This, too, is pointless and a terrible tragedy.

There is a sickening tragedy I have seen under the sun: wealth kept by its owner to his harm.

This too is a sickening tragedy: exactly as he comes, so he will go. What does the one gain who struggles for the wind?

Here is a tragedy I have observed under the sun, and it weighs heavily on humanity:

God gives a man riches, wealth, and honor so that he lacks nothing of all he desires for himself, but God does not allow him to enjoy them. Instead, a stranger will enjoy them. This is futile and a sickening tragedy.

There is a tragedy that infects everything that happens on earth: a common event happens to everyone. In fact, the hearts of human beings are full of evil. Madness remains in their hearts while they live, and afterwards they join the dead.

Here's another tragedy that I've observed on earth, a kind of error that comes from an overseer: