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/
Amen, brother!
Leading by example is the proper way forward.
Most people hate to be told that they should be using X because it is so much better than Y or Z.
Belittling the other person’s preferences is a sure way to lose their interest.