1. If your information is really good, but other applicants who were in the same window with you on the day of the interview were also rejected, it can be considered that the visa officer was in a bad mood and refused the visa. In this case, you can sign again immediately.
2. If it is true that your information is not good enough to convince the visa officer that you will definitely come back after going to the United States, then in this case, you must improve your information and sign it, so that you can pass the customs. If you don't change anything, you will still be refused a visa.
Therefore, after being refused a visa, it is necessary to analyze what caused it, so as to prescribe the right medicine and have a high chance of passing it next time.