I will be very consise and I will entertain few questions
I applied for free to Ruhr University bochum and I got admission for a masters course in cognitive science on the 1st of September 2020.
Applied for visa interview under category B
I blocked my account October 9 2020
Started online courses October 15 2021
Followed up closely, did exams and assignments and gathered some credit points.
Paid every semester fee 345€ per semester
I waited and waited and in that time I could count like 10 people who tried to scam me.
I read so many discouraging things here. People here that talk the most have no experience and they are often wrong.
April 2021  came and the reset happened, I reapplied but something kept telling me this wasn't the way I was gonna get visa.
I prayed, I broke chains of limitations, I fasted, I held on to my belief and one day it occurred to me to mail my course director and talk to him about it. I spoke with him and he made it clear that they cannot influence the embassy. Before we ended the zoom call I pitched the idea that if I had a scholarship it would change my status and I will be given priority status. That moment he told me that there's a scholarship fund for international students due to covid. He asked me to check if I'm eligible, long story short I applied with the following documents
Transcript (featuring credit points I gathered from online classes)
Motivation letter (might share this later)
And recommendation from a lecturer (did well in a few courses so that wasn't so difficult. I just mailed the professor and introduced myself and remembered me)

First week of October I received the scholarship letter.
Switched to category A and interview was for 25th of October

Interview day I got there and met a guy in the compound Mr Tony and he helped my arrange and photocopy all the necessary documents. He seemed to be an expert at this german student waka. I will drop his number on request.
Got to the embassy gate, net paulinus who was being very curt with everyone but when it got to me, he just seemed to mellow down and since I didn't make any silly mistakes with my documents there was no need for animosity.

Visa interview was very straightforward.
In the waiting room there are paintings, stand up and look at them, they have all the 16 German states but if you don't look closely you won't see it.  I stood up to drink water from the dispenser and took a closer look.

Interview questions
What do you know about German politics ?
What do you know about its economy ?
What do you know of its Geography?
What was your research project on?
Why Germany?
Can you speak the language (a plain no is fine. Don't lie sorry sat a little).
While she was asking these questions she was taking my information and we were doing biometrics so you just have to keep talking even if she isn't looking at you.

Dec 5 AM
Dec 17 visum

3 tips
Stick to your online school if you can
Pray
Keep getting more accurate information and don't be discouraged by naysayers.