Flashed TWRP, installed rom + now have bizarro screen on/off issue

Hey gang, I just flashed twrp yesterday and was super excited to get rid of all the bloat and have a great 6.0 device. However, after flashing countless roms and wiping everything the screen flickers on and off and also half the time it wants to act like I have one of the cases with the cutout on the front. Any input will be extremely helpful as I really dont want to spend money on a new device. I cant even seem to find anything anywhere about flashing stock recovery and rom. Can find files but im certain there has to be some wonky utility we have to use on this phone. Thanks in advance and hope to hear from you guys soon!
-Andy

P.S. I have flashed the stock ww-2.20.4...... twrp rom this morning and im guessing this is some hardware issue but any input is helpful.

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