That website has a list of tools that you can use and learn more about. Don't take their word for it. Whatever you pick, question it from time to time. Am I still using something that's trustworthy?
It's a bit like the secrecy people seek with offshore companies or bank accounts. Privacy from? Under what circumstances? What's your tolerance?
Privacy a balancing act between convenience and your data. You can lock yourself down and be nearly untraceable but then you can't access certain websites, apps, or services. Popular privacy plugins like uBlock Origin, Cookie AutoDelete, Privacy Badger, and DecentralEyes make you harder to track but can break a lot of website functionality.
For browsing, have different browsers for different purposes︀ with different privacy levels. For even greater privacy, use a virtual machine or better yet︁ a remote desktop (paid for anonymously, if you can).
On the other hand, the more︂ steps you take towards privacy, the more you stand out from the norm. By seeking︃ privacy, you may become difficult to track across services, but you may stand out on︄ individual services.
You can test yourself on
Cover Your Tracks
You need a similar approach︅ to instant messaging. Be pragmatic and realistic. You can and should try, but some people︆ just aren't going to install your preferred high-privacy, high-security IM app (Signal, Session, Matrix, Threema).︇ However, maybe you can get them to change from less secure services (Skype, Telegram, Viber)︈ to WhatsApp, which at least is end-to-end encrypted even though it's owned by Meta.