What do you mean by a bunch of billionares and the CIA control the media? If you're talking about the news media, being shit, blame it on the fucking news media companies who are politically biased. There is no law in the U.S that allows the government or other people to control freedom of speech for other individuals.
Then for your second point, "work for $7.50 and go in life-long medical debt" honestly that is more of how you loosely define freedom, I define this as more of economic security which you could argue is part of freedom in which the U.S severely lacks upon in terms of providing government-formed social nets for people, however in a more general sense I could argue to why the U.S is free:
I can stand in front of the residence of the President and hold up a sign stating my opinion of them and the secret police or their bodyguards won’t drag me away into a hidden cell for daring to offend the leader.
I can criticize any religious practice and not be arrested or hung for it.
I can have a relationship with anyone I choose and not be arrested or even executed for it.
Men and women are equal under the law. My wife being attacked or raped does not result in her being stoned to death for violating backwards codes of conduct that punish her for the act of others.
I do not need a passport or any other kind of internal papers to travel within the USA.
I have the freedom to own firearms without having to justify myself or my reasons to any government official.
In most parts of the country I have the freedom to carry same said firearms for personal defense as the police have no legal duty to protect me.
I can live anywhere I want only subject to being able to pay for it.
I can leave the country by any means I choose and absent a court of law deciding otherwise, no one can stop me or has any say in the matter.
I am not subject to any mandatory enslavement of my person via forced military service (although I would happily volunteer to wear the uniform if the government asked me to).
My credit and social background are private and cannot be used preemptively by the government to restrict my freedom or to shame me into good behavior.
My freedom to speak is virtually absolute and as long as what I am saying is not slander, libel or threats of imminent, direct violence, I am free to offend anyone on any subject in any way I see fit.
The government does not punish me for success by taking my wealth away from me to give it to “society”.
The government cannot take away my rights and freedoms by a simple vote of majority.
Everyone can agree that U.S.A is a free country, china isn't.