Hollow sir. My name is Mohammad Sumon Hossain. I...

You should review the embassy and inquire about the status of the visa application, and if the application is rejected, you will have the following information:
 the legal section and the scope of our work as lawyers and legal advisors is to provide legal advice and we have no relationship with state institutions, but with regard to your inquiry and in general, the reasons for refusal are either for reasons related to the incompleteness of visa requirements or the reason is a security refusal whose reasons are not announced. But in case of rejection, it is possible to re-apply or to object the rejection. The decision in approving the granting of the visa is to be made only by the embassy.