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

No freedom is absolute.

Terroristic threats

Child pornography

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Insurrection

Threats of violence

Freedom of speech does not apply to:

What is the cause of the common odor many senior citizens have (despite good hygiene)?

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

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.

How rough can the ferry passage from Hull to Rotterdam be in the autumn ( at the end of October )?

Revealing classified information

And much, much more.

HIPAA violations

How exactly do things get smuggled into prison? Does the sender hide it inside something else very well? Does someone put it in their butt? Do the prisoners make deals with the officers?

Insider trading

Revenge porn

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.

Main distributor to Amazon’s Whole Foods hit by cyber attack - ft.com

Trade secrets

Perjury

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.

How can you maintain self-control?

Conspiracy

False advertising