Only use encrypted communication, use a phone running GraphineOS, and your computer should be running a secure OS like QubesOS (in addition to Tor and/or MullvadVPN). Basically you need maximum security and maximum privacy, a Thinkpad running Libreboot is the best laptop and a Pixel will be the best phone.
Of course, at the same time its not harmful to do as much as you can. However, as the saying goes “the game was rigged from the start”