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

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.

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

President Xi Jinping Speaks with U.S. President Donald J. Trump on the Phone - fmprc.gov.cn

Revenge porn

False advertising

Fraud

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Insurrection

Insider trading

Child pornography

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Threats of violence

Terroristic threats

And much, much more.

Do you think this Labour Party is qualified to run our country?

No freedom is absolute.

HIPAA violations

Perjury

Neuroscientists find individual differences in memory response to amygdala stimulation - PsyPost

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.

Freedom of speech does not apply to:

Conspiracy

Was Daenerys' downfall inevitable after she left Meereen in Game of Thrones?

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.

Trade secrets