Don't. In addition to the fact that our police are intrusive, our criminal legal system is optimized for tallying high numbers of convictions rather than justice, everything is dependent on your credit score, you get effectively no vacation and very little in the way of labor protection compared to back home, and you're fucked if you get sick or injured without adequate employer health care -- according to various European Hackernews who came here, our food is terrible.

As for how Germany is freer than the USA... it consistently scores higher on various press freedom indices and on Cato's Human Freedom Index. Social mobility and legal protection of privacy are both higher in Germany.