[aveao]

This isn't really true. I've lived in both Munich and Hamburg now, and you 100% need some amount of german to navigate life, many people do not in fact have conversational-level english. I often say that the common paths tend to be easy to navigate in english (e.g. booking a train ticket, getting a phone line), but the adjacent flows (e.g. filing a refund request for your unfulfilled seat reservation, cancelling your phone contract) often require talking to someone in german. A doctor may be marked as speaking english, but that doesn't mean that their reception speaks english.

Berlin may be a different story within Germany, and then there's the entirety of e.g. Netherlands, but I know that the situation in France isn't better than here.

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That said, B1 is a difficult level within german. Being able to converse fluently enough in not-quite-correct german -which is enough for getting through day to day life- is not necessarily enough to pass the test, and you really need to crunch through memorizing the grammatical gender of thousands of words, alongside getting really good at applying them in various grammatical forms (e.g. declensions vary for the same word based on how it's used).