I look into a lot of open source, privacy-related programs and services because I dont like updates. I hate update reminders, I hate required updates. I hate updates which massively change the interface, I hate updates which change functionality and remove useful features, I hate updates which remove user control.
I use Windows group policy, I use regedit, delete update files, blocked Microsoft via dns, uninstalled Microsoft Store and other bloatware, dualboot Linux Mint, dont allow my laptop to connect to wifi automatically, utilized adb to uninstall system apps for updating on my Android phone, use a vpn firewall to prevent specific apps from using internet at all, get FOSS apps directly from F droid, vpn, turned my purse into a Faraday bag, I keep my Nintendo Switch in airplane mode, I block Nintendo servers using 90dns, and am currently considering downgrading my Samsung S21 Ultra to an older device so I can use Lineage OS.
i also wash my hands a lot.