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.

Revealing classified information

False advertising

Why do women consider 80% of men as unattractive?

Conspiracy

HIPAA violations

And much, much more.

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Freedom of speech does not apply to:

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.

Trade secrets

Which type of physical cable has fastest transmission speed?

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.

Revenge porn

Threats of violence

My religion teacher said that there are no atheists because in order to reject God, you must first have a concept of God, and if you have a concept of God, you are not an atheist. In what way is this true, if at all? Why?

Terroristic threats

Insider trading

Insurrection

Elon Musk says XChat is rolling out to all, but questions remain about its alleged security - TechCrunch

Perjury

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.

No freedom is absolute.

Why does Russia and many parts of Eastern Europe strangely have a high percentage of female doctors and physicians (~70%)?

Child pornography

Fraud