Coz, there are hundreds of students from different countries studying here. All of them cannot be wrong.
That's what lemmings think when they are jumping over a cliff. Sorry, buddy, for a computer science student, this is a HUGE logical failure. I do believe, though, that most of them made a poor choice, especially those from India. And I believe that most of them eventually realize it, and regret it, as you do.
Because, three of you people said three types of things.
I don't see that much disagreement. Nobody has suggested you stay in Poland and slug it out to the end. In fact, that is the one thing on which we probably agree. For what it's worth, I help Polish students get into American universities with scholarships, and spent twelve years working with Polish universities, including your school. I'm pretty aware of the state of education in Poland.
Having lived in Poland twelve years myself and having seen many, many foreigners from all parts come and go, I can tell you that if you are discontented now at such an early stage in the game, it will only grow worse, especially in your second and third year when you are doing your research project using Commodore 64s and Apple IIs held together by duct tape and bubble gum while your friends who went to study in the West are actually helping design the next generation of petacomputers. Perhaps a bit of an exaggeration, but that's how it's going to feel. That's what I mean about going where the R&D dollars are.
Secondly, if I understood you correctly, you said you were getting a non-engineering degree. This would be the perfect time to reset and get that engineering degree. Shucks, you're doing the math, anyway. Might as well get something more out of it than a piddling MSc in computer science. And since your switching into engineering anyway, might as well switch to a field that has much brighter employment prospects like petroleum, geological or biomedical engineering.
I'm sorry, but the only reasons you have given for staying in Poland are lack of ambition, lack of initiative, lack of imagination and lack of self-esteem. And desperation. You seem to be driven by inertia like the Titanic into the iceberg, or like a desperate gambler into the poor house. Or like a lemming into the sea.
Snap out of it. Get a grip on reality, talk to some of your colleagues who are studying in the rich countries of Western Europe or the English speaking countries, as well as those studying at the better universities in India. There is nothing wrong in quitting a game you will most probably end up losing anyway. Prepare for the GRE, beef up that math and English, explore high-quality engineering programs at top schools flooded by R&D dollars rather than wasting away in someplace where you are unhappy and dissatisfied, and never will be happy and satisfied.