Unlikely. Sounds like a hardware issue with the display. No harm in trying though.
Bootloader unlocks are not possible on G965U or G965W. This thread is for G965F only.Is it still possible to unlock the bootloader on a SM-G965W from Canada (BWA) with Android 10 G965WVLU9FUE2 (May 2021). I cannot get OEM Unlock to show up. Tried all the normal steps to get it to show up. Change time, disable updates, reboot, wifi connected, logged into google, logged into samsung, etc. and probably evey combination of these settings. In the process of actually waiting 7 days.
Instructions to flash back to stock are given in the 1st and 2nd post of this thread.