Unless you're willing to take your computer with you everywhere, it's still easily compromised with hardware modifications when you're out of the home. Your router's firmware probably has multiple 0 days the NSA/FBI could exploit. Intel's Management Engine is an effortless backdoor into every laptop and desktop you have. Securing your smart phone against privacy issues is a lost cause.
The only real option you have left is using a typewriter with a one-time pad in a sound isolated room with a sheet over your head. And even then what you type isn't anonymous, it's just encrypted to withstand everything up to, but not including, some government agent holding a wrench (insert xkcd comic here)
The only real option you have left is using a typewriter with a one-time pad in a sound isolated room with a sheet over your head. And even then what you type isn't anonymous, it's just encrypted to withstand everything up to, but not including, some government agent holding a wrench (insert xkcd comic here)