In order to protect your privacy even more efficiently, you need to do something very simple whenever using an online service or a software. Something that most people fail to do is reading the terms of service, also known as a TOS, from companies or developers’ software. This usually will tell you straight up whether they’re spying on you, selling your data, or using it to sell ads. This will solve a lot of problems with people not realizing that some software is actually the opposite of privacy, but they keep using it thinking it enhances their privacy.
This bad and stupid advice. Terms of service are written in such a way as to obfuscate what’s happening and often when they change you need to use a tool like diff to figure out what’s going on.