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

False advertising

Insurrection

And much, much more.

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Revenge porn

Perjury

Trade secrets

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No freedom is absolute.

Child pornography

Revealing classified information

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Fraud

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.

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.

What is the worst name in Tolkien’s legendarium (meaning and look)?

Conspiracy

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

Oregon State leaves no doubt, outslug Florida State to reach College World Series - OregonLive.com

Freedom of speech does not apply to:

Threats of violence

Terroristic threats

As an atheist don't you really feel fear for committing sins which are not violating national laws?

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.

HIPAA violations