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.

Insurrection

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.

Why do foolish atheists think their strange delusional theories are facts?

Fraud

Freedom of speech does not apply to:

Insider trading

Why do some guys treat girls so badly?

Trade secrets

Conspiracy

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.

Do you even realise that NASA could've hid or bury every single piece of evidence for a flat-earth and exaggerate their evidence? Have you ever question materialist scientific narratives?

Revenge porn

No freedom is absolute.

Child pornography

Why are Republican politicians so afraid to oppose Trump?

Perjury

Threats of violence

False advertising

Why are white guys the top consumers of interracial porn? What's the rationale behind this phenomenon?

HIPAA violations

Terroristic threats

And much, much more.

What is the irony of life according to you?

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.

Revealing classified information