Security and privacy should be major factors in determining the services you choose to use for any situation involving your personal information.
Phone
Use a service such as WhatsApp, Skype, Google Hangouts, Viber, Jami, Talky, and WeChat. Many services offer voice calls, video calls, texting, and group calls, video calls, and chats. (Source: https://www.techradar.com/best/best-alternatives-to-skype).
Use a secure e-mail service such as ProtonMail, CounterMail, HushMail, Mailfence, or Tutanota. (Source: https://www.lifewire.com/best-secure-email-services-4136763). Look for encryption.
Tip
Maintain two e-mail addresses. One for public use and one for private use such as financial transactions or submitting personal documents to government offices.
Instant Messaging
Basic SMS is an unencrypted, unsecure form of communication. It is common, easy to use, and available on every phone. Text differently. Use an encrypted form of instant messaging such as WhatsApp, Signal, Wire, Telegram Wickr, or Pryvate. (Source: https://www.techworld.com/security/best-secure-mobile-messaging-apps-3629914/).
Browser
Use a secure browser such as Tor, Brave, and Firefox. (Source: https://www.lifewire.com/best-secure-email-services-4136763).
Mobile Browser
Use a secure mobile browser such as Firefox Focus or Duckduckgo. (Source: https://www.lifewire.com/best-secure-email-services-4136763).
Search Engine
Use a privacy-oriented browser such as Duckduck.go. (Source: https://www.lifewire.com/best-secure-email-services-4136763).