Hello again @jeddy
unfortunately you have to deliver a proof that you can afford your living expenses for one year, the current amount is 853,- € per month/10.236,- € per year. Alternatively, you could submits proofs of a scholarships, proofs of the income of your parents or a suretyship. It would be a good idea to contact the scholarship department at your university and apply for a scholarship.
I hope my answers were useful for you and I'll be very pleased if you contact me again with further questions. I'm a member of the MBEON-staff and I‘ll be glad to guide over a longer period of time. Mbeon is an online consultancy for migrants via the mbeon-app, which you can install on your smartphone for free. Download it via App Store or Google Play Store. You'll find me In the mbeon-app and get confidential one-to-one advice in a safe virtual room, where nobody can wiretap messages. More informations: www.mbeon.de. In mbeon you will find me under the name München, Frau Müller)