Help! I'm trying to install Sonoma on iMac 13,1

Help! I'm trying to install Sonoma on iMac 13,1

Hey, I'm pretty new to the whole OCLP program and I have managed to install OCLP on the Mac and make an EFI Boot option and Success fully get to the Sonoma install screen and start the install process however after the screen in the attached image it just restarts to the old MacOS HDD login screen. By the way I am trying to install this on to a external SSD as my new boot drive as I don't want to open my screen to "update" my OS. The SSD was wiped before any installation and formatted to APFS GUID Partition System. Any help would be appreciated!

https://preview.redd.it/hxlulyabx8we1.jpg?width=4032&format=pjpg&auto=webp&s=c85ee95aecccdd6b2567adcc24b9641c212bc14e

Author: @Excellent-Chard-3247