If freedom of speech is absolute, how come it's not applied...

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.

False advertising

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.

If you caught a shoplifter at your yard sale, how would you handle it?

Child pornography

No freedom is absolute.

Terroristic threats

Buzzy anti-aging supplement beloved by biohackers may not actually be that useful after all - New York Post

Freedom of speech does not apply to:

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.

Caitlin Clark's Teammate Sends Official 'Warning' To WNBA Referees - Yahoo Sports

Insider trading

Fraud

Conspiracy

A Rocket That Crashed on the Moon in 2022 Wasn't Musk's—New Study Reveals Its True Origin - Jason Deegan

Perjury

Threats of violence

Insurrection

Romania in the past was a poor country, but last year the government announced it had 521 billion leu (113$ billion dollars) revenue. Why is so much? What's the reason?

And much, much more.

Revealing classified information

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.