Is there ways to use Data or Wi-Fi at home without being tracked a the time or later?

I’m starting in this “world”, advice would be excellent !

I don’t have computers at home, just my smartphone but I still want to know if I can at least text privately

I know that I can use apps like Signal that are more secure than others but I’m still connected to my wife or my data so it’s not really that private….

If you can recommend me blogs,videos,articles or information where I can start reading and learning more about …

data home privacy wi-fi