Simply put, the correction is only for formal problems, such as typos, inconsistent labels or unclear pictures. The opinion statement designed the essence of your invention. After searching a large number of existing technologies, the examiner thinks that your invention technology has already appeared in the market, or your invention can be easily obtained by conventional technical means. Then a notice of examination opinions will be issued at this time, and the inventor (that is, you) will answer the questions raised by the examiner.
In addition, if you have difficulties in your personal application, you can find a patent agency and ask a professional patent agent to help you make this opinion statement, which can help you both from the patent point of view and the process point of view!