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

Freedom of speech does not apply to:

HIPAA violations

No freedom is absolute.

Tesla Stock Is Falling. Why June Is Starting With a Loss. - Barron's

Terroristic threats

Insurrection

False advertising

How airline fees have turned baggage into billions - BBC

And much, much more.

Threats of violence

Trade secrets

How do I deal with my annoying little kids?

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.

Revealing classified information

Conspiracy

AI identifies key gene sets that cause complex diseases - Medical Xpress

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

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.

CVS is shutting down 271 stores in 18 states. Is your pharmacy affected? - NJ.com

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.

Insider trading

Perjury

'I was shocked': Melbourne man's 'unbelievable' find after buying house - SBS Australia

Fraud

Child pornography