My Lg v50 thinq phone screen is not really showing me anything but a weird mishmash of pixels when turned on. google assistant still works and it can still sense touch. I tried taking screenshots of the phone while connected to the PC but nothing shows up, no data or files show up on the v50tab(?) on the PC.

https://androidiphone-recovery.com/enable-usb-debugging-locked-android/

Methods 3(ADB) and 4 (recovery mode) seem the most realistic but I would like some guidance on those because I don't know how to use ADB/what commands to write. I'm not quite sure how to mirror my black phone screen on to the pc if debugging is off, so method 2 doesn't make sense.

any help would be appreciated, Thank you :D if none of those are optional, Ill just go to a pro and see what they can do.