Good guide; if you want to be extra secure for shit that supports it; 1) Get the cheapest phone you can imagine, all it needs is to be able to have an auth app/recieve SMS
2) Get the cheapest SIM-card you can imagine 3) NEVER TELL ANYBODY THE NUMBER (this is why you need a seperate phone and not a dual-sim) 4) Use that number/phone for all your 2FA shit
They'd now need to steal your phone to access your shit.
If you don't want to go through a lot of hassle, 2FA already helps a bunch but if somebody is out to get you they still can (because 90% of the phone companies are straight up retarded)