Touch screen not working after display replacement

Touch screen not working after display replacement

I’ve cracked my watches and when it was broken the touch screen didn’t work so i thought when i buy a new screen, the touch screen should work, but it didn’t.The display normally work, just that touch don't work. I have some spare broken screens and they also don’t work. Tried to change battery and no success. all the ribbon cables look untouched without any problem. Pretty clueless now