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

Conspiracy

Terroristic threats

Revealing classified information

If white people had been slaves, would WLM be a thing right now?

Freedom of speech does not apply to:

Perjury

False advertising

How cultural transmission changed across 3.3 million years of human evolution - Phys.org

Revenge porn

Trade secrets

Insurrection

US researchers solve tokamak plasma mystery with elusive ‘voids’ discovery - Interesting Engineering

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.

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.

Fraud

EleutherAI releases massive AI training dataset of licensed and open domain text - TechCrunch

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.

Insider trading

HIPAA violations

Which services sell most on Fiverr?

Threats of violence

And much, much more.

Child pornography

What are some current trends in sci-fi and fantasy literature?

No freedom is absolute.

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.