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

No freedom is absolute.

Revealing classified information

And much, much more.

Salmonella outbreak linked to California egg distributor sickens 79 people - NPR

Revenge porn

Terroristic threats

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.

The AI-generated ad that aired during the NBA finals took $2,000 and 2 days to make - Mashable

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.

Conspiracy

False advertising

Sed autem voluptatibus minima impedit officia ipsa.

Fraud

Freedom of speech does not apply to:

Insurrection

GLP-1 drug helped type 1 diabetes patients keep healthy glucose levels and lose weight - STAT

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.

Insider trading

HIPAA violations

5 health issues that can occur due to Vitamin D deficiency - Times of India

Child pornography

Perjury

Trade secrets

Why are Boomers so vehemently opposed to student loan forgiveness?

Threats of violence

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.