The problem is much bigger than which browser you use.
Your ISP can sell the info of all the locations you visit.
Google runs 90% of the server farms within the USA.
Google is playing with a AI search engine to locate communications within specified parameters.
Adding a off the shelf VPN only keeps your ISP from tracking you. Others can track you and in many cases read all your communication.
Whatsapp claims to be peer to peer but they hold all the keys.
Anytime they want, they can read all your communications.
So far, the only reliable and secure communication is Protonmail.
Very secure and since servers are located in Switzerland, outside of USA laws.
There are several factual inaccuracies in your post. Can you reference where Google “owns 90% of server farms?”