Trading, for example, is one example of a job that is not directly related to physical. Apart from trading, there are other similar jobs that allow you to make money. The condition is not to be greedy and get caught up in big profits.
I don't think i would call trading a job, i know i have read that some people take trading as their full time job, but i would not recommend that to people, it is too risky to do, you cannot depend on just trading as your source of income.
Bitcoin, FIAT, gold & silver are commodities, they have value, but among these four the one that has the advantage in terms of privacy is bitcoin, that's why these days, global or internet criminals are taking advantage of this advantage of Bitcoin.
Take note that BTC is not a privacy coin, neither does it offer privacy on the protocol level, to achieve privacy with BTC, you need to use privacy solutions, or do BTC->xmr->BTC, and it is not everyone who knows how to stay private when they use BTC. Criminals also use other tools, like cash.