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

Perjury

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.

Insider trading

What happened to your school bully?

Freedom of speech does not apply to:

HIPAA violations

Insurrection

Laws of physics are still broken: Attempt to explain away black holes' central singularity falls short, scientist says - Space

Threats of violence

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.

Fraud

Bulls' Billy Donovan and Every Knicks Request Denied amid HC Search Rumors - Bleacher Report

Conspiracy

Revenge porn

Terroristic threats

‘Wicked: For Good’ Trailer: Ariana Grande and Cynthia Erivo Put Glinda and Elphaba to the Test in Dazzling First Footage From Sequel - Variety

And much, much more.

Child pornography

Revealing classified information

Wastewater is now helping track measles spread around the US - CNN

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.

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.

False advertising

BlackRock removed from Texas blacklist after climate policy rollback - Financial Times

Trade secrets

No freedom is absolute.