It is unrealistic to want to earn more money but not to work for a long time. You can try to sell it. But that also requires socializing, dealing with people, communicating with people and even capital investment.
If you want to earn more money, but don't want to work for a long time and accumulate funds to start a business, it will take you a long time to start a business.
4. Give yourself a position, what is most suitable for doing, real estate, senior white-collar workers or investors.
5. Or you can do short-term, and then make effective use of the funds for stock trading, investment and so on. Wait for more money to be put into the business, and then the snowball gets bigger and bigger and accumulates rapidly.