> Edit: that said, if there are - in fact - simple ways of achieving this goal I'd like to hear so I can share them.
Here are some things which aren't too hard, but which provide a reasonable improvement in security:
1. The easiest thing to do is replace your current SMS application with Signal, and to encourage your less technical friends to do likewise. You can still send regular SMS messages, but if both people have Signal, it will switch to encrypted messages. I've talked a fair number of non-technical, non-paranoid users into doing this and they all seem pretty happy.
2. Tor is surprisingly easy to set up and use these days, it works well, and it uses DuckDuckGo search by default. Again, it won't provide flawless protection against a sufficiently powerful adversary, and it's obvious you're using Tor. But still, launching Tor and using it is pretty easy. And it will definitely keep, for example, web advertising companies or ISPs from building detailed dossiers on your behavior.
Again, if you just want something easy to use and you don't pay attention to the fine print, you're not necessarily going to be well-protected against sophisticated adversaries. But you can improve your security a lot for relatively little effort.