What you can do: https://www.patrick-breyer.de/en/posts/messaging-and-chat-control/#WhatYouCanDo
Contact your MEP: https://www.europarl.europa.eu/meps/en/home
Edit: Article linked is from 2002 (overview of why this legislation is bad), but it is coming up for a vote on the 19th see https://www.patrick-breyer.de/en/council-to-greenlight-chat-control-take-action-now/
It’s somewhat amusing how western liberals once touted freedom of speech as a defining characteristic separating them from states like China, which impose stricter limitations on freedom of expression. The argument was made that the pursuit of personal liberties is what sets western liberal culture apart and makes it superior to others.
However, this narrative succeeded primarily due to broad public agreement within mainstream Western society. When economic conditions were favorable and people generally content with their system, there was little reason to suppress dissenting views. In fact, allowing such opinions on the fringe even served to reinforce the narrative. But now that growing discontent is causing this illusion of freedom they once believed in to unravel.