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

Revealing classified information

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.

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.

The Upsetting Truth About What Wildfire Smoke Does to Your Body - Gizmodo

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

Revenge porn

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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.

Fraud

Child pornography

My Wife Was With a New Man. The Moment I Saw His “Package” Still Haunts Me. - Slate Magazine

Insider trading

Perjury

Insurrection

Joe Milton gives 4 reasons why trade to Cowboys was a ‘blessing,’ shades Patriots’ offense - Boston.com

HIPAA violations

Freedom of speech does not apply to:

Conspiracy

Is it possible for creatures with intelligence more advanced than humans to evolve naturally in the universe?

False advertising

Terroristic threats

Trade secrets

Meghan Markle’s Disneyland Family Post Fuels More Backlash After “Cringe” Pregnancy Dance - boredpanda.com

No freedom is absolute.

And much, much more.