The OP didn't talk about visiting a country, he asked about settling in Germany. The words were "do you have to", not "I wish I could"; he made learning your ad

The OP didn't talk about visiting a country, he asked about settling in Germany. The words were "do you have to", not "I wish I could"; he made learning your adopted country's language sound like a chore instead of a challenge. Full immersion makes the learning process much easier. Besides, taking citizenship of any country requires a language exam.