That only unlocks the bootloader, which then allows you to install a custom one. There is no built-in option on Android for gaining elevated priviledges in any

That only unlocks the bootloader, which then allows you to install a custom one. There is no built-in option on Android for gaining elevated priviledges in any form, not even in a restricted way to disable bloatware that might compromise your privacy, and rooting your device breaks OTA updates, which also include security patches.