Can’t boot into macOS after installation (presumably complete)

I successfully (probably) installed macOS Sonoma on my external HDD. I'm not sure because when the apple logo part finished, the system restarted and I didn't have any MacOS boot option, only the installer. Now I can't see the macOS boot option, just reset nvram,installer,recovery... So the only thing I can do is re-run the installer, which just restarts again. I'm using a usb drive with the EFI.

submitted by /u/quanticworld
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