If freedom of speech is absolute, how come it's not applied for private spaces and for the Internet?

That’s what it is. You have no right to use other people’s stuff. If people let you use their stuff, they can tell you how you can use it, and they can tell you to stop using it any time they want.

Insider trading

You have freedom to travel. If I loan you my car, I can tell you not to take it out of town, because it’s mine, you have no right to use it, and if I give you permission to use it I can tell you what you can and can’t do with it.

Is the Chinese economy currently collapsing? If not, what could potentially cause it to collapse?

HIPAA violations

Conspiracy

Threats of violence

Why was the rock band Kiss so successful?

If you’re wondering why free speech doesn’t apply to the internet, it’s because you have no right to use other people’s stuff for free.

Child pornography

Insurrection

Would Donald Trump's reelection make the world more dangerous?

Perjury

No freedom is absolute.

Freedom of speech does not apply to:

Why is there so much free porn on the internet?

Terroristic threats

False advertising

You have freedom of speech. If I loan you my computer, I can tell you not to use it for certain things, because it’s mine, you have no right to use it, and if I give you permission to use it I can tell you what you can and can’t do with it.

How should you handle a situation where your friend tells you they like someone who also likes you? Should you tell them or continue as normal?

Revenge porn

And much, much more.

Revealing classified information

Has anyone experienced an out of the body experience, as a child, years before you had ever heard the term or understood the implications?

Trade secrets

Fraud