Name a single place and the law that is remotely comparable to the 1st amendment. It doesn't exist. There are some analogue yes but they all have exceptions like the one mentioned above where arbitrary the holocaust is excluded or certain other topic are excluded. Or the free speech only applies if your speech is considered satire or has some arctic value. etc. etc.

>but then the US has such exceptions too, and thus also lacks absolute free speech.

No, it does not the fist amendment is very clear and short enough to not have any loopholes in there. People just intentionally misinterpret it and then come around and say you can scream "bomb" in an airplane in US airspace therefore you dont have free speech in the US. This just shows the lack of understand what free speech means. Its not about having the right to make audible noises of any kind at any time and place. Similarly if you order a person to kill someone and do so with your voice trough the act of speaking, you are committing a crime.