I'm an immigrant and I prefer to speak English here. I also find it irritating that almost all official information is only in German.
That said, this is Germany and the language of rhe population is German, no matter how many of us immigrants are here. I would find a fully multilingual culture nice but I hardly can expect one. It's my task to figure out how to navigate the local system and adapt. But like in the article, finding help to do so could be made easier.
https://www.dw.com/en/do-immigrants-have-to-learn-german-in-germany/a-70467984