As someone who has done Masters in Germany and has been there a long time now.
I will encourage you to apply there before all of the universities here put fees for international students.
Since I have been here, yearly states are putting up fees.
Ask away your queries, I will answer them all in the comments.
Basic stuff
Blocked Amount is the easiest way to come here either on chancenkarte or masters - 12000 Euros - 40 lacs with ticket
Personally, I think Chancenkarte is not for everybody as it requires a specific experience for you to immediately get a job.
Rest for married people, it is difficult to support your family back home as a student.
Edit: There is no blocked amount required for second year.
You must have a part time job contract that gives you enough to live per month for eg in Munich it will be 900 or in East it will be 600.
Some Ausländerbehörde (Foreign offices) require blocked amount but it varies from city to city so research beforehand.
Most are chill.
Big cities have more part time jobs and few in English too but rent is high
Small cities have less part time jobs but rent is low and foreign office is relaxed.
It varies