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.

Threats of violence

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.

Did you become a cuckold for your wife?

Revealing classified information

Insurrection

Revenge porn

Is Daenerys Targaryen really the most beautiful woman, or is everyone saying that just to flatter her?

Terroristic threats

HIPAA violations

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.

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And much, much more.

Freedom of speech does not apply to:

Child pornography

Was Michael Jackson really an innocent person?

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.

No freedom is absolute.

Perjury

Is the water safe to drink in England like here in America or is it necessary to bring tablets to prevent any cholera when in London?

Conspiracy

Fraud

False advertising

What is the best sex you have ever had (in detail)?

Insider trading

Trade secrets