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.

Trade secrets

What is your first experience having sex with older men?

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.

Insurrection

HIPAA violations

S&P 500 Nuclear Stocks Receive Price Target Hikes Following 20-Year Meta Deal - Investor's Business Daily

Perjury

Insider trading

Revealing classified information

The Largest Black Hole Jet Ever Found Is 3 Times the Size of the Milky Way - The Daily Galaxy

Child pornography

Threats of violence

Revenge porn

If the world was flat, would it be possible to see Mount Everest if it was on the other side of the Earth on a clear sunny day?

Terroristic threats

False advertising

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.

Why do guys on dating apps often just first message "hey" or "hey how are you" instead of being more creative and unique? How do they think being a copycat will stand out?

Fraud

And much, much more.

No freedom is absolute.

Inhibitory Neurons May Hold the Key to Spatial Learning and Memory - Neuroscience 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.

Conspiracy