I am trying to install High Sierra on a MacBook currently running Ventura. It’s an old MacBook. I am facing several issues. Please help.

First following the guidance from Apple website to create a bootable usb, it never worked. The create install media command does not even work for ventura. Not sure why. I am unable to get the High Sierra install app from the downloaded package five from Apple since I am on Ventura.

Anyway I found this github tool called mist that helped me create a bootable usb with high sierra. It went well. Then i tried to install that. It keeps on saying the bootable usb is damaged.

A quick google search shows this may be due to expired certificates. I am unable to resolve this issue. Kindly help me install this old os on my mac