Dear Tamana Hamidi 

Yes you can .You have two choices 

First you can study in India and there are number of institute which offers German language courses .The best institute among them is Goethe where you can study from a1 to c1 

Second choice is you can study it from Germany onwards .since in germany some uniUniversit are providing German language course and you can entroll in it .

So the best among this is absolutely the first study from India 

Best of luck

Hie,

Yes, you can get admission in any German language course. Gothe institute max muller Bhawan is one of the best institutes. You need to clear levels or papers A1 to C2. You can further check the eligibility conditions, courses, timings, fee structure etc from the official website- https://www.goethe.de/ins/in/en/sta/new/kur.html

Hope this helps!

Good Luck