I am a PhD candidate at a university in Germany. My supervisor, along with all of my colleagues, are German. I am a native English speaker, hired for a position that does not require German. However, I can speak some German, although it is not as good as the English of most of my colleagues.
In the 4 months I've been in this position I can tell that my supervisor and my colleagues don't like socializing in English. They try their best to speak English around me during lunch time, but I can tell that it's really taking all of their energy and effort to string a proper conversation together, to the point that it's really hard for me to understand their English. I encourage them to speak in German because I can understand more than I can speak. But of course I end up not participating in the conversation as much, which I can tell also makes my colleagues uncomfortable.
Any tips on how I can improve this situation from my end?