Hi Oleksandra! Several countries in Europe have opportunities for very cheap or free masters and PhDs, I know for sure that Austria and Slovenia have. In Austria, you currently pay 726,72 Euro per semester if you're not an EU citizen.
This page provides a lot of very useful information about studying in Austria.
But there are challenges. Firstly, the language. Only a few programs are thought in English, the official language in all Austrian universities is German; you also have to prove sufficient knowledge of German to be admitted to an Austrian university. Secondly, you will have to go through a bureaucratic and at times unpleasant immigration process. Student visas aren't that hard to get, but it still can be a pain. Thirdly, keep in mind that it will be very hard to get a work visa for any EU country after you finished your studies.
Johannes recommends the following next steps:
- If you want to study in a foreign country, learn the basics of the language.
- Think about finances. Student visas in European countries often don't allow you to work and earn substantial amounts of money. You might have to live from your savings.