Anyone have problem with but screen goes dark when open to a certain

Sadly the backlight ribbon cable has a problem that Apple did offer an extended warranty program which ended a few years ago 13-inch MacBook Pro Display Backlight Service Program. This defect was even documented by us here The Design Flaw Behind MacBook Pro’s “Stage Light” Effect.

At this point your only hope is finding a junker to swap out the display assembly. There was a few shops which created the tools and skills to open the lid assembly to replace the cable. The display will have marks that can be a bother I don’t know of anyone who still do this and some have tried patching the ribbon cable which won’t last very long so don’t waste you money on that solution.