First of all, you should make it clear that money, that is, what you said about money, is only the equivalent exchange of wealth value. To put it bluntly, it is a transaction voucher. Besides, it's just waste paper or ordinary metal. I mean, money itself is worthless.
Then back to the topic of financial crisis, the so-called financial crisis refers to the crisis of using money (or directly called virtual assets) to invest in stocks, industries, futures and other financial industries (search online by yourself). Because what they hold is generally not the actual property, and their assets are at the end of the bubble (inflation), their money can evaporate in a short time, that is, lose money.
Well, then there is the so-called economic crisis, and that's the point. Don't confuse the concepts of economic crisis and financial crisis. As soon as the financial crisis breaks out, that is, the crisis of our investors comes, it will affect the development of the real economy (manufacturing, agriculture, etc.), thus triggering an economic crisis. So they are an approximate causal relationship. Financial crisis usually leads to economic crisis.
Well, at this stage of the economic crisis, we produce less, consume less and people lose a lot of jobs. That is, productivity has dropped, and this time is the real loss you understand.
I hope you can understand what I mean.