Losses on the stock market caused him to fall on hard times.

股票市场上的损失使他倒霉。

《新英汉大辞典》

These mass lay-offs, it might be hypothesised, are more like natural catastrophes, such as famines, than isolated accidents that cause a few people to fall on hard times.

从假设上来说，这些大型解雇事件，与影响少数人的事故比起来，更像是饥荒之类的自然灾害。

youdao

Like council tax on homes, the bills fail to adjust downwards when you fall on hard times, and nor do they rise when income booms.

BBC: Business takes a tax hit

Should I ever fall on hard times, it's reassuring to know: There's a straight-back chair waiting for me.

WSJ: One Night in the HELP Women's Shelter

The Times quoted him at length and went on about how hard it is to fall in love with sport utility vehicles.

FORBES: Falling in love