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

Freedom of speech does not apply to:

HIPAA violations

Child pornography

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Perjury

Conspiracy

Trade secrets

Why cant a narcissist admit when they are wrong?

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.

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.

Revealing classified information

What is the best way to get over your ex?

And much, much more.

No freedom is absolute.

Terroristic threats

In bed, not in music, which is better, a drummer or a bass player?

Revenge porn

Threats of violence

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.

What is your most intimate experience with your best friend?

Insurrection

Insider trading

Fraud

Are there any queer Space Marine Legion in Warhammer 30k or 40k?

False advertising

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.