Some of the advice in that article is poor, and mostly it seems to exist to convince people to buy Kaspersky products, which is absolutely not necessary if you care about your privacy.
Change your social network account privacy settings.
This achieves literally nothing. Facebook, Instagram, Google, whoever, still have all your data and still sell it to third parties. The only way to avoid this is to not use them at all. Delete your accounts. You don't need them.
Use Private Browsing in Kaspersky Internet Security to avoid Internet tracking.
Unnecessary. Start here for advice on how toughen up your browser to avoid tracking:
https://www.privacytools.io/browsers/Use a messaging app with end-to-end encryption for example, WhatsApp
Actually laughed at this one. Thinking WhatsApp, which is owned by Facebook, which is having backdoors built in to it at the request of the US government, is a good choice for secure messaging is laughable. Use Signal or Riot.
Use a Kaspersky Password Manager to make using secure passwords easier.
Again, completely unnecessary. Why would you buy a closed source piece of software, when better open source alternatives exist for free. Use KeePass.
Use passwords or biometric authentication to lock your phones, tablets, and computers.
Biometrics are not secure. Avoid their use.