Difficulty transferring to new iPhone. Sim details lost.

new phone transfer esim … a cautionary tale

New iphone … i remeber being impressed by the simplicity of moving to an exciting new phone. Today, less so!

the new os suggested i convert my physical sim into an esim. I trusted apple! I was wrong. It disabled my physical sim card and failed completely to generate an esim! I cannot even call my service provider … no phone!

it also failed to pair with my watch and did not transfer all of my settings across … i am still working on what is broken, for example siri has returned :-( and does not seem to have a disable option … just says downloading!

is there a way to resurrect my sim card? Disable siri? Get my watch out of a permanent reboot loop, retire my app and watch settings? … a long list of fustration I realise … is there a good user-based site that will help? The apple support site is appalling, and most other sites are simply regurgitating the same stuff (ai slop)

Thanks.