We don't all live in Israel,
but the main reason I believe most of us speak well is practice. I got most of my English from watching television without subtitles and by listening to British music. Also, my beloved mother used to make me write a page about a little subject every day after school, which helped to improve my writing. When I got older and the internet became "a thing" I started chatting with people from other countries and got to write mainly in English. As you can probably see, the Internet is a great great tool. The point is that the more you get into it, the more ways you connect yourself with the language the more it is rooted in your way of communication, and the better you can speak it.