Wanting to try using Graphene after doing some research, it seems exactly what I'm looking for. However, my Pixel 6 pro is bought from Verizon store, which mean OEM by default is greyed out. Are there any methods available to bypass (Factory reset, custom scripts, etc…) that could circumvent this problem without simply getting a new phone, which is at this point not an option for me.
OEM unlocking greyed out
Sorry, unlocking Pixels locked by Verizon has been impossible for years now. Maybe you can return it and get one from the Google Store?