Also, it's important for you to use English in your daily life. I'm not talking about talking English but, for example, we can use our phones and computers in English. Playing games in English, reading English tech news (Techradar, etc.), talking with others on English tech forums like LTT Forum. It's amazing you can find answers when you search as English while you can't find it when you search the term as Turkish.
For things like "in, on, at, writing/write" that we (especially me) usually write wrong, you can use extensions like Grammarly. I'm using it right now.