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

False advertising

Fraud

HIPAA violations

Scientists find a boulder weighing 2,645,547 pounds that was washed inland by an enormous tsunami - Earth.com

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.

And much, much more.

Legion of 50 strong as Seahawks reveal Top 50 players in franchise history - Field Gulls

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

Suspect in custody after 11 stabbed at Oregon homeless services provider - NBC News

Revealing classified information

Child pornography

Insurrection

Why do I have the impression that almost all questions about advertising the flat Earth theory come from people who don't believe in a flat Earth themselves and are just provoking?

Conspiracy

No freedom is absolute.

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.

Taylor Swift Owns Two Versions of Four Albums. Now What? - Billboard

Insider trading

Terroristic threats

Revenge porn

People’s Pharmacy: Aspirin thinking has changed for cardiovascular risks - OregonLive.com

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.

Perjury