I have neither time, resources nor know-how to like go all out on data privacy. But I try doing things like using Proton for Mail, browsing with DuckDuckGo or Ecosia, messaging on Signal instead of WhatsApp, etc.
But I’m having a hard time responding to people who say “why do you do that, it’s completely pointless since companies like Google have all of our data anyways unless we go all out, and nobody has time for all the effort that takes”.
Any reduction in the flow of data to big tech is a win. Its a journey, not a race. Good on you for starting.
As for trying to convince people, it usually a waste of time unless they are truly interested.
My usual tactic is to inform them about how google can and does close accounts for vague terms of service violations.