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

False advertising

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.

Threats of violence

Nostalgic Tunes Trigger Stronger Urge to Dance Than Familiar Hits - Neuroscience News

HIPAA violations

Revealing classified information

No freedom is absolute.

Founder of Cryptocurrency Payment Company Charged with Evading Sanctions and Export Controls, Defrauding Financial Institutions, and Violating the Bank Secrecy Act - Department of Justice (.gov)

Freedom of speech does not apply to:

Terroristic threats

Insider trading

Experts Predicts Unrecognizable Changes to Earth’s Map - The Daily Galaxy

Revenge porn

Insurrection

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.

Diabetes drug may cut migraine days in half with little weight loss: Study - ABC News - Breaking News, Latest News and Videos

Fraud

And much, much more.

Child pornography

New Jersey Man Arrested for Stealing Instruments From Heart - Rolling Stone

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.

Perjury

Conspiracy

Buzz Williams on what Maryland's playing style will be, learning the Big Ten and more - 247Sports

Trade secrets

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.