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

Freedom of speech does not apply to:

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.

Threats of violence

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No freedom is absolute.

Insider trading

HIPAA violations

What is the best/cute/funny/playful chat/conversation between brother and sister?

Perjury

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.

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.

Mets’ need their all-time lost opportunity to be a Dodgers aberration - New York Post

Insurrection

And much, much more.

Trade secrets

What does the Turkish word çıplak mean?

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.

Revealing classified information

Fraud

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Child pornography

Terroristic threats

Conspiracy

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False advertising

Revenge porn