May I suggest using Signal messenger over WhatsApp.

WhatsApp does use the Signal messaging protocol but I don’t trust meta not to modify their implementation of it.

Signal is a privacy at all costs foundation.

This is really cool and will be useful. My second thought was oh great now my smart TV can see how excited I am watching their injected ads and how many people saw it too. One of the many reasons to never connect modern TVs to the Internet.