I used to listen Michael Bezzel who is the owner of inteltechniques.com . Really nice and educational podcast but he is on a break atm. Check the website you will find bery useful information about privacy.

I am using signal with my wife and 2-3 closed friends for 3 years now. The problem with signal is that you need a phone number. Now i am using SimpleXchat which is a decentralized messenger and i believe is the future of privacy chats. Its hard to convience people to switch their daily chat app, but if tou do it i would say go with SimpleXchat.

i’ve been reading privacyguides.org for more than a year now. They suggest tools for all platforms and they also have a forum.