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

No freedom is absolute.

Child pornography

Revenge porn

How would the Arab world be different if there was no Israel-Palestine conflict? Would there be better relations among its members?

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

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.

Simulations find ghostly whirls of dark matter trailing galaxy arms - Ars Technica

Conspiracy

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.

Freedom of speech does not apply to:

Astronomers discover ultrapowerful black hole jet as bright as 10 trillion suns lit by Big Bang's afterglow - Space

Revealing classified information

Perjury

Threats of violence

Qui eaque occaecati facere et.

HIPAA violations

And much, much more.

False advertising

Mario Kart World Coins Don't Function As You'd Expect, New Evidence Suggests - GameSpot

Trade secrets

Terroristic threats