Integrated to what exactly? You are never going to be integrated with people that want you to speak the local language, even if you do speak it. The thing is, once you leave your country, you are an expat, an expat doesn't do well with people that want to force their local/close minded way of doing things on you.

There are values that are the same across all Europe and those should be the focus of integration. Learning local language is not one of them.