What are you talking about? Multiple EU countries have free speech written in their constituion.
Article 5 in German basic law (their constitution): https://www.gesetze-im-internet.de/englisch_gg/englisch_gg.h... (translated)
77th paragraph in the Danish constituion: https://www.thedanishparliament.dk/-/media/sites/ft/pdf/publ... (translated)
Edit: the flagged comment I replied to claimed that no EU country had free speech in their constitution. This is objectively wrong, and is why I wrote my comment.