Apple, Alphabet, Amazon, Microsoft, Meta, and more are the enemies.
The reason is simple: you will never know when, or most importantly what, surveillance software they may install on your personal devices or the apps you use daily.
Take iOS 26.4, the first update to introduce the Age Verification in compliance with the Digital Service Act and forthcoming legal frameworks in your country. By the time you realized, it was too late.
WhatsApp, Facebook Messenger (laughable), and perhaps even Telegram and Viber cannot be trusted. WeChat and Line, no comment.
Signal, the gold standard, may not be enough but it is something even your parents could at least begin to use and is better than nothing. Privacy is an absolute human right, as fundamental as the freedom to transact.