Issues with OC on Dell Precision T3600 with RX580 8GB

Hello,
I tried to run MacOS Catalina on my Dell Precision T3600 with a RX580 8GB using the OpenCore guide, but when i boot into my usb stick its just a black screen. Could someone help me, bc i'm new to Hackintoshs and really couldn't find the issue. Here is my EFI folder:

Author: SeloCan