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:

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.

No freedom is absolute.

Ananda Lewis, Celebrated MTV VJ, Dead at 52 - Rolling Stone

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.

Fraud

Kevin Costner and ex-wife Christine Baumgartner keep their distance in awkward family reunion at son’s graduation - Page Six

Trade secrets

HIPAA violations

Terroristic threats

Export Your Microsoft Authenticator Passwords Before They Get Deleted - Lifehacker

Child pornography

And much, much more.

Perjury

FDA approves Moderna’s new lower-dose COVID-19 vaccine - AP News

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 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.

False advertising

Why don't younger men like older women?

Conspiracy

Insider trading

Threats of violence

SpaceX launches Sirius XM radio satellite to orbit, lands rocket on ship at sea (photos) - Space

Insurrection

Revealing classified information