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

No freedom is absolute.

Perjury

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.

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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.

Revealing classified information

Threats of violence

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And much, much more.

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.

Fraud

Do crossdressers like wearing pantyliners and tampons in their butts?

Revenge porn

Trade secrets

Terroristic threats

Can you write a letter to your first love without mentioning his/her name?

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.

Insurrection

Insider trading

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HIPAA violations

Child pornography

False advertising

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Freedom of speech does not apply to:

Conspiracy