First, do an industry that you like, believe in, has potential for development, and is trend-driven.
A "trend-driven" industry refers to projects with a great future prospect.
For example, more than ten years ago, no one had mobile phones. If you had started a business in mobile phones back then, it would have been a trend-driven industry.
The definition of a trend-driven industry is: something that not many people have now, but in the future, almost everyone will have. If you can start a business in a trend-driven industry, it will greatly increase your chances of entrepreneurial success.
If you can enter a trend-driven industry for entrepreneurship, it's like riding a fast horse, giving you a better chance at succeeding in your startup.