Chosen Solution

Changed battery, tried plugging in screen multiple times, cleaned with a q tip does not work.

If i’m looking at the photos, it seems like that there is a gold pin missing in the last picture. Besides that, what are those white strings at the logicboard? Hair? Have you already tried a new screen?

Disconnect the screen and look for any debris between the connector from the display and the logicboard. Also, check if it clicks like Lego. If you did both steps, you probably damaged the flex cable in some sort way. This is the right/lower flex. You must then buy a new screen.

here you go,thanks