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

No freedom is absolute.

Child pornography

Revenge porn

Why would Trump make conspiracy claims that Haitians are eating pets in Ohio?

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.

False advertising

NYC Renters Brace for Price Hikes After Broker-Fee Ban - Bloomberg

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

Threats of violence

Where did the false claim that Haitian immigrants are eating pets come from?

Trade secrets

HIPAA violations

Insurrection

N.J. doctors are using a party drug to send patients to ‘another planet.’ Yes, it’s legal. - NJ.com

Freedom of speech does not apply to:

Revealing classified information

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.

Major supermarket chain workers start strike across 4 cities - TheStreet

Terroristic threats

Conspiracy

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.

China’s Huawei plays down its chipmaking capabilities - ft.com

Fraud

Perjury