Not getting enough Job opportunities. What should I do?

Well, I’m holding 3+ Years of experience in Digital Marketing and SEO but not getting enough job opportunities. I’ve successfully completed all the tasks assigned by the clients as well as the interviews rounds. But all the time I get rejected saying “I haven’t graduated yet, and how am I supposed to manage my class hours & work”. Due to uprise of COVID my exams are getting postponed and it is something I cannot help with. Now I successfully completed many SEO works for several clients and helped ranked their site on various platforms, so what am I supposed to do now to get job opportunities from big companies. Updates: 1. Updated my resume. 2. Learned new skills including Data Analytics, Google Cloud, and many more. 3. Spoke out to my mentors. But last night I got a rejection from a very big Digital Marketing company for the same reason. This really shattered my dreams. Any suggestions will be helpful. Thank you