How can I permanently turn off auto updates and in-app info on iphone15

settings > apps>app store> automatic downloads> toggle switches for App downloads, App updates, in-app content.

Thanks for professional response.

Re: monitoring updates, I actually do read the blurbs that accompany updates. I have few apps and decades of experience using Apple computers in a business, for school, for professional purposes. Recently had an Ultra 2 watch issue and hours and hours of technical support including watch replacements, resetting, setting up as new watch and after hearing multiple times "it can't be your phone that is causing the problem," did one final attempt. Reset watch, re-paired to my phone, tried on husband's wrist, same glitch. Reset watch, paired it to my husband's phone, put it on his wrist, problem solved...kinda looked like my phone was the issue. I used his wrist because apple said it had to be a wrist issue. Eventually (this is after 6months), I made a final effort to strip my phone down, looked at how my backups were being transmitted, deleted any unnecessary phone apps, eliminated notifications, automatic services...(re-setting phone would be last step, if stripped down phone didn't work). Re-set watch, re-paired watch to my stripped down phone...and, for the first time in 6 or 7 months, I have a fully functional apple watch (on my not defective wrist). I will add stuff back into my phone gradually, as needed. So maybe I am a micromanager, but a mostly happy one.

I don't live in fear. I feel that monitoring what goes into my devices is a responsible action and occasionally productive. It is an informed and deliberate choice based on experience and knowledge.