not a problem. I actually just recently fixed it as life got in the way and I kinda forgot about it myself. I bought new conductors that go behind the controller buttons and it worked no problem.
https://www.ebay.com/itm/Replacement-Conductive-Film-Flex-Ribbon-Cable-for-PS4-JDM-001-010-011-020/143432418835?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
You will have to open up your controller to see which model it is, but it is pretty simple.