Can’t boot into sequoia without usb drive.

I have gone through the process of installing it on the main drive as OCLP has suggested. I have also done it manually with the build open core feature. I also copied all the data from the flash drive including hidden files to a folder on my desktop and it still doesn’t work. Is there somewhere I can put that folder? Any thing else I can do? All help is appreciated! 🤗 I can only add one video but the other one has me installing open core to disk.