Germany abolished its experiment in tuition-free education for foreign students very quickly. It's been abolished for about 4 years now. In addition to tuition, fees, books, equipment, supplies, etc. for school, you must also prove you can pay all living expenses - rent, utilities, food, health insurance, transportation, clothing, etc. Rental housing in Germany is rather scarce in many areas, so you should plan to need at least EUR1000/month just for rent & utilities.
For cost of living data for practically any country, see numbeo.com. India has among the lowest cost of living of any country. E.g. you will need a completely new wardrobe for most countries - probably two complete wardrobes, summer & winter.
Yes, you must be fluent in the language of the country at a high academic-technical level to go to school there. Student visa interviews are also conducted in the country's language. Germany's university entrance exams - reputed to be among the world's most difficult - are of course in German.
Your USD10,000/yr budget is a small fraction of what you will need to study in Europe. Expect to need more like EUR30,000 (@ = USD35,000) & up per year, plus transportation, etc. UK: expect costs of GBP30,000-40,000/year. US: USD50,000/yr to 100,000/yr. Canada: CAD40,000/yr.
IF a university accepts you, you must prove you have sufficient funds for all school + living expenses + return transportation to your country of citizenship to apply for a student visa.
Another problem: you have already been out of school for several years (unless you just completed your bachelor's degree in India & are aiming for grad school).