I know, those great conveniences is how they get you to stay. One step at a time my friend. My first suggestion is to start with you own server. You can connect from your apple devices. 

I never used iPhones so it was easier. 

Suggested journey: 

1. Get you own nostr:npub126ntw5mnermmj0znhjhgdk8lh2af72sm8qfzq48umdlnhaj9kuns3le9ll server. Happy to share more insights if you want to DM me. I also have a discount code. 

2. With deeper understanding and hands on experience with self-sovereignty get rid of the iPhone, but a Pixel and flash nostr:npub1235tem4hfn34edqh8hxfja9amty73998f0eagnuu4zm423s9e8ksdg0ht5 

3. Get rid of the Mac and buy a new laptop either with Linux already installed or flash it. I also know there is a Linux distro available for Mac. But I just shy away from their hardware.