My phone is on and working but the screen is flickering green and blac

I've gone through hell and back with this phone but in short I dropped my phone in sweden and the screen is flickering green and black. I can hear and feel the phone is on and working but I think the ribbon cable might be loose.

(I was having restarting issues till my phone screen went completely black. I took it to a shop to just get the screen on which it worked but the screen wasnt in properly. Thus the ribbon cable might have gotten loose during the fall. Now this has stopped the restarting so now I need the screen fixed. Ps I've had a mous case since iPhone 11)