Read this how it affects you text : https://www.patrick-breyer.de/en/posts/chat-control/#how-does-this-affect-you

All of your chat conversations and emails will be automatically searched for suspicious content. Nothing remains confidential or secret. There is no requirement of a court order or an initial suspicion for searching your messages. It occurs always and automatically.

Intelligence services and hackers may be able to spy on your private chats and emails. The door will be open for anyone with the technical means to read your messages if secure encryption is removed in order to be able to screen messages.