Help Me Achieve My German Post-Graduation Dream

Hi, I am Gourav Sharan and I am aiming to pursue my post-graduation in Germany. I have applied to universities and am waiting for my results, which will be out by May. However, most of the elective courses which I want to pursue are offered only in German. I have completed till B1 level in Goethe Institute and secured 82% in the final examination.But I would like to further continue on to B2 level too. Since I belong to an average middle class family, it is too expensive for me to afford. I somehow managed to gather money with utmost difficulties to fund till B1. But now I have run out of resources and my family can’t afford the costs. The class fees cost 42000 and exam fees cost 6000.Goethe website and their course fees If I complete B2, I will be able to take up and write the TestDAF test. Clearing this will open up more choices of courses including the courses taught in the German language.