This is something that sneaks up on you as well. And all that started a few years ago when I finally decided to get myself my first smartphone and tried to optimize data usage and battery life. I then realized that not only some apps and "system processes" were using battery and data when not in use, but that there wasn't even given a way for me to stop it from happening. I also got creeped out when I moved to work in another building and Facebook started giving me friend suggestions of people who worked there. Location wasn't even enabled on my phone.
And now today I have no mainstream social media account, run GrapheneOS on my phone, Linux on my computer and have migrated to almost entirely FOSS software and apps. I have become the crazy privacy obsessed weirdo.