What to do after booting into the backup image?

My bazzite install broke somehow (I think it had something to do with my gpu partially dying) and I selected the second option from boot and I'm in. But on restart the pc goes back to the broken version unless I select the second option again. What is my next step? How can I fix the default system install? (this is my first time ever asking for help so correct me if I've not done it right)
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