If you are determined to DIY, search for “iQOO Z6 Pro motherboard diagram EDL” on XDA or Telegram groups – but expect to pay for the software tool eventually. Don’t believe YouTube videos claiming a “free easy EDL point” – they are often fake or for different models.
This is the safest method for software-bricked devices where the screen is black but the vibration motor still works. iqoo z6 pro edl point free