Lots of different suggestions are out there about secure communications.
This is a list of some options. Inclusion here does not imply any expertise or recommendation. This is purely a list of information gathered from various sources for your information and as a starting point for exploration.
A VPN is one way to mask your presence online. You can get free accounts for computer and phone apps. Here are some options to explore. You can also download a VPN app to your cell phone and surf the web by logging into the app first. This is useful if you are traveling to places with internet restrictions, or if you wish to mask you surfing.
Proton mail is a secure email. https://proton.me/mail
WhatsApp is encrypted end-to-end, although it is a service controlled by the company Meta.
Facetime is also encrypted end-to-end, although it is controlled by the company Apple.
Please note that Zoom and Google Meet video calls are only secure and encrypted if you have a business account.
Signal is a messaging app that is encrypted and independently owned: https://signal.org/