How to become a sales manager?

Hello, I have this situation, I’m leaving after ninth grade and want to enter the state trade economics college, Belarus. And among the websites of all colleges I did not find such a specialty as "sales manager". There are only merchandisers and cashiers there. It turns out that I need to enroll as a commodity expert, complete my internship, and with the experience of a commodity expert, can I get a job as a sales manager in a normal company? Yes, if possible, please tell us about your specialty, thanks in advance.