FOSS.
GrapheneOS on mobiles, Linux on computers, private servers (@start9) to host all your data; all connected via Tor. People don't realize the cost of freely handing your data to third parties such as Google and Apple. When they do, the cost will be too great. 
Self-reliance is true freedom. 
The cost of privacy is convenience. Self hosting is not easy, but the cost of not doing it will be greater.