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

HIPAA violations

And much, much more.

Trade secrets

Have you ever had sex with your female cousin? How did it start?

Terroristic threats

Freedom of speech does not apply to:

Insider trading

How is the legalization of same-sex marriage impacting societal norms in the USA?

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.

Revenge porn

False advertising

What are the consequences of being addicted to something? Is it considered wrong to have an addiction?

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.

No freedom is absolute.

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.

Did You Know You Can Plug These 10 Devices Into Your Smart TV's HDMI Port? - MakeUseOf

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.

Threats of violence

Perjury

Can I bring a tub of whey protein to the airport?

Conspiracy

Revealing classified information

Fraud

Scientists uncover kidney-to-brain route for Parkinson’s-related protein spread - PsyPost

Insurrection

Child pornography