Can doing advertising and marketing course help me in my digital marketing career?

Yes, Do a course on Digital Marketing, get a certificate and do an internship. It will help in career growth. One of the top institutes in Mumbai is IIEDM. They provide Digital Marketing Courses with Certification and help in job placement. 3-month certification programme with these modules in Digit

Yes, you will be clear with the theory of pitching. Apply logically in digital platform these ideas. You will perform better then.

If you want to pursue digital marketing then you should go in for the field oriented course.