Yeah good stuff. I have gone down this rabbit hole pretty deep, and work in an information security adjacent field.
Phones are the hardest. Graphene is good, but you lose a lot of functionality of the phone, and you still have your location constantly tracked in a government accessible db which is almost certainly linked to your personal identity.
You can get pretty far with medium level computer infosec. Wireguard VPNs, ideally paid with monero. IVPN is good, or you can rent a VPS with monero in a jurisdiction outside the US empire and set up your own wireguard VPN. Various things to avoid browser fingerprinting. Tor works well but it makes many sites unuseable.
Then of course run Linux, you are SOL if you use windows and probably also MacOS.
The hardest to solve problem in computer infosec for me has been avoiding IntelME, a tiny separate computer with closed software which runs inside your computer, has full control and access over everything you do, and generally cannot be removed without breaking the whole machine.
There are ways to ameliorate this problem, but the only way AFAIK to avoid this completely is to get like 12 years old computers.
Fortunately China has been creating their own separate computer supply chain which is designed to avoid US spying. They will of course want to do their own spying but it is hard to put a backdoor in and not let others use it. So I am optimistic we will soon have more secure hardware available.