I'm not a person that consistently getting high scores and I am not good at any sport, personally I don't like sport
Same. I played volleyball and basketball back in grade school and high school but I wasn't very good. It was mainly just bc I was taller than everyone else till I hit like soph/junior year and the other guys started catching up lol. I don't ever really watch sports though. I've been more a 'mathlete' than an 'athlete' but I still weight lift for exercise. Even if your not good in sports I would recommend even doing something like track and field to be in shape and in the US people are obsessed with sports so it helps make you look like a well rounded person
I'm talking about IT industry.
There's many foreigners in Wroclaw working in IT. The amount of Poles is higher but nonetheless there's a large community of people from India, Pakistan, Italy, Portugal, etc. working for various corporations. This is a bit of a generalization but from what I've seen the Indian/Paki guys tend to work in IT, the Spaniards, Italians, and Portuguese tend to work in finance, banking, accounting, etc. The UK/US native English speakers often hold mid level managerial positions and report back to HQ for direction. There's also a lot of young people working in customer service esp if they have a foreign language skill. You can use your knowledge of Turkish and English to land such a job while you're in school.
A lot of Poles have switched careers to go into IT because it pays a lot better than comparable jobs. There's a smaller company that basically trains individuals on programming/coding for like 4-6 months or however long it lasts and at the end they place you in a 10k zloty a month job which is a very high wage for PL when most people are making like 3k-6k zloty (depending on job, city, etc). However I believe that this particular company only hires poles to train but they may be willing to hire a person who speaks fluent English.
I have no doubts that you'd get a good job once you have enough experience and learned a particular discipline. Unless you have another stream of money to pay for schooling, rent, living expenses, etc it may be difficult for you to find a sort of job that students typically work while going to school.
Honestly, I would still highly recommend you expand your search outside of Poland. If I were in your shoes I would study in the US because there's so many programs that welcome people from abroad and there's a very good chance that you'll go to school for free simply for being an English speaking Turk. There's one such program called like 'diversity immigrants' that you can easily get in as long as you're a high school graduate and have a basic understanding of English. You can search for it - website will end in .gov. Plus, you'd make way more money while you're going to school and it'd be far easier to get a student type job than in PL without knowing the language.
Also, IMO internships especially unpaid are worthless. I never had an internship while in college and I never had an issue finding work. Honestly even the friends who have had internships or didn't I didn't see any significant difference in their career prospects upon graduating. It may be different in PL but imo I'd avoid any sort of unpaid internships.