The book is a classic, some think Bradbury's best, but there also is a great film based on the book. Check out the 1966 film (not the later one) with Julie Christie and Oskar Werner. Unforgettable. Truffaut directed.
As for freedom in the U.S. We have an odd system of government. Much of our freedom varies by state. The 10th Amendment to the Constitution reserves to the states powers not specifically granted to the federal government. The federal government has tried to step on this reserved power. This is especially true with the current administration. However, the Supreme Court usually rules in favor of the states if there is a contest.
Anyway, in some states a woman having a miscarriage cannot get help because of strict abortion laws. Women have died from this. Also, voting regulations vary by state. That's kind of important. There are other issues. So, if I ever move, I'll be sure to move to one of the more 'liberal' states. I live in a liberal state now. The U.S. is going in the direction of an authoritarian form of government these days (snatching people off the street if they are suspected of being undocumented immigrants, for example). I hope this is a phase. I hope the proverbial pendulum of history swings back toward less authoritarianism.
How does that compare to Germany?
I think it depends on the specific topic. If you own a company I guess restrictions and bureaucracy you face are much more annoying in Germany. Same applies concerning the tax system.
In other areas, for example the ones you mentioned, actually the USA might be more restrictive than Europe nowadays ...
Anyway, apart from that, the increasing surveillance and bureaucray within Germany was one of the main reasons why I left the country.