Why can't I download MacOS Sonoma Installer

A few days ago I updated my Late 2013 iMac14,2 from Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina 10.15.7 to Sonoma 14.7.6 and it worked perfectly. Today I tried to update to Sequoia but it was working very slow and I decided to downgrade back to Sonoma. However, when I download the Sonoma Installer it gives me this error when extracting

"An error occurred while extracting the macOS installer. Could be due to a corrupted installer"

I tried 2 more times but it still gave me the same error (after downloading it for 30+ minutes each time)

It downloads the installer but chatgpt told me that it should contain these files: InstallESD.dmg BaseSystem.dmg BaseSystem.chunklist InstallInfo.plist Inside "/Install macOS Sonoma.app/Contents/SharedSupport/" which it doesn't

What should I do??

Author: @9307911