Macbook pro bricked

Hi guys, a week ago I installed Monterey on my 2010 MacBook Pro.

It was working fine but I saw that Big Sur would work better, so I did the same thing as the first time when I upgraded with OpenCore, but now my Mac is blank when I turn it on. I have tried reinstalling High Sierra from Recovery (formatting the hard drive in the process), and nothing, I have no way to delete the OpenCore partition, and when I try to select to boot from hard drive with High Sierra, the screen freezes.

Anyone know what should i do?

Author: @raduos