iPhone 4 screen white with lines after attempted repair

I foolishly thought that I could repair my old iPhone 4 power button myself, so I took it all apart and tried to replace this ‘power and sensor cable’ and see if I could make the power button work (tried putting something in it but that didn’t work), then I made the classic mistake of not being sure how to put it back together and when I finally did it didn’t fit in properly and the screen is all white/bars like it’s been dropped or something.

All in all, I would have been better off not touching it at all! Is there anything I can do to at least make the screen work so I can get some data off the phone using my data recovery software,

Much appreciated!