> I would have daily obstacles doing basic life things.

That heavily depends on the city and country. I don't know where OP is, but for example in Berlin it's kinda rare to meet people not speaking any English, basically mostly old people/retirees don't.

There are gyms where people speak English, cinemas with English subtitles, all kinds of doctors speak English, even a lot of bureaucracy like driving exams etc. can be taken in English. Speak to a random person in English, odds are very high they respond back in English.

I'm not saying this to mean it's 100% easy of course. Default language is ofc German, and not knowing it locks you out sometimes. Just saying that it's possible to live in a city like Berlin and not speak the language, and most days you barely think about it. I'd say it's an obstacle once-twice a month rather than daily.

Berlin is a completely different world than the rest of Germany. Never make the mistake of generalizing anything that you observed in Berlin to Germany outside of Berlin.