Clover or OpenCore on Z370 Aorus Gaming 3?

Hi guys. i just tried creating a Catalina usb installer but i had troubles so i created a High Sierra installer using the guide on here for unibeast but that failes to install and gets stuck on the line "AMFI loadtrustedkeysfrom NVRAM: failed getting NVRAM" "USING 16384 buffer headers and 10240 cluster IO buffer headers"
i would like to install either Catalina or BigSur on my Gigabyte Z370 Aorus Gaming 3 with a I7 8700K using the onboard UHD 630 graphics.. Can anyone help.. Thanks in advance..!!

Author: DAFFY