You can do all the privacy measures in the world, but if the people you talk to are using spyware then it’s all out the window. (literally Windows, get it?)
This video breaks down some of the basic reasons to switch to Linux so you can convince your friends: https://video.simplifiedprivacy.com/why-linux-beats-windows/
I’ve used Linux primarily as my OS for 11 of the last 16 years.
Linux has gotten much better in this time.
But no, I would not actively convince anyone to switch if they didn’t want to. I have too many other things going on to be tech support 😉