How to improve the success rate of product selection in Amazon's blue ocean market?

Amazon sellers are familiar with the terms "red ocean" and "blue ocean". Comparing the market to the ocean, the red ocean represents the known industry with fierce competition, while the blue ocean represents the innovative industry, which wins new markets and obtains higher profits through differentiation. In the red ocean market, competition is fierce and the competition for resources is fierce; in contrast, the blue ocean market has superior resources, weaker competition, and provides more opportunities and profits.