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.

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.

Terroristic threats

Are We Wrong About Dark Matter? Dwarf Galaxies Suggest So - SciTechDaily

Child pornography

Trade secrets

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.

Does the U.S military really prosecute military staff for cheating on their spouse, or do they close one eye if the cheating does not involve other military personnel since adultery is fairly common? Adultery is illegal in U.S military

And much, much more.

Freedom of speech does not apply to:

False advertising

Origami structures unfold into seamless surfaces for deployable applications - Phys.org

Conspiracy

Fraud

Perjury

Why can’t the British eat or drink anything unless they place a table cloth on the table first?

HIPAA violations

Threats of violence

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.