Booting into USB instead of SSD after failed upgrade

Tried to upgrade to Monterrey from Catalina, but it is now stuck in apple boot logo. I wanted to start from scratch again, and edit the plist again, but now it’s booting straight to SSD even if the USB is plugged in. Any idea how can I make it boot into the Catalina installer instead? I also don’t have the boot picker showing, just straight to broken macOS or Catalina installer (if I don’t have the ssd plugged in).

Edit: Don’t have my PC till I get back to my apartment tomorrow, so I’ll guess I’ll just make the Monterey installer tomorrow. I’m pretty sure I missed a setting to change in the config

submitted by /u/inn0ichi
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