iMac late-2012 with Sonoma stuck on loading screen

iMac late-2012 with Sonoma stuck on loading screen

https://preview.redd.it/rx2ibj9ctj0e1.jpg?width=1920&format=pjpg&auto=webp&s=3e1320d5de3688458f03263b4e7a3f549d9b4159

Hi everyone! Hoping someone can lead me in the right direction on what to do. I was on Sonoma via OpenCore, and I was rooting the patches (as it was indicating I needed to root the patches for the version I had) after my iMac's response time became considerably slow. Since restarting it, I can't seem to get past the loading screen at the beginning (with the Apple logo, as pictured here). I tried booting to try and erase and reinstall via my TimeMachine on my external drive, but it couldn't pull anything up. Any advice would be greatly appreciated. I hope this makes sense, otherwise feel free to ask questions.

submitted by /u/Airwave51
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