To add a zapping wallet open Minibits and get a free LN Address and add a mint. Now paste your LN address into Amethyst in your nostr profile.
Once you have 100k sats open a self custodial LN channel with Zeus Wallet using their LSP.
You now have an anonymous device, running over Tor, with a nostr signing device on the phone, nostr running thru orbot vpn, with a nostr relay on the phone, with a privacy preserving wallet with no personal info attatched.
For private encrypted DM log into Oxchat using Amber.
You can host your own onion nostr relay and a SimpleX server using a DIY Start9 home setup.