Administer of privileges are out of hand!
I recently received a Macbook Air M3, 8GB 256GB that runs on MacOS Sonoma as a gift from my uncle. When I got my hands on it, it was already opened and settings were set up ( I live in Uzbekistan, and he bought it from USA to check whether it was operating smoothly). First, I logged out of his iCloud account then tried to rename main directory folder and that's where the whole thing happened. As i changed it, from an admin account I just turned into a standard user. Ever since, I can't upgrade my operating system, install new applications or modify the settings. ( Note: I tried many YouTube videos, but they weren't of any help at all. No working methods I could find.). So, if any of you guys can help to resolve this issue, I'd be really happy.
MacBook Air 15″