How to repair J2 FPC on iPhone 5s?

I have an iPhone 5s that I water damaged in summer 2017, and it worked fine until last month, when the vibrator motor died. I disassembled it to try and repair it, and succeeded, but ended up killing the flash light. When i tried to fix that, the whole phone bricked. I had a weird theory that leaving it alone for a week could potentially fix it. I was correct. I plugged it in today and it started up, working properly with the exception of the power button, vibrator and switch, and volume. I have determined that the connector for these buttons (FPC J2) is broken and needs to be replaced at micro-soldering levels, in other words I’m probably going to use assistive touch from now on because there is no way I’m buying a micro-soldering kit when there’s a 99% chance I’ll botch the repair anyway.

TL;DR Leaving an iPhone to sit and then charging it will fix it sometimes. Because that’s Apple. So my question is, does anyone know how I can fix the connector or jimmyrig it, without microsoldering, or if i must microsolder, is it more likely that a first-timer would brick the phone trying this? If you think its safe enough to attempt micro-solder without frying it, (I’ve never done it before but price and time isn’t a concern, I just don’t want to break it since I got it working well enough), let me know. The connector is iPhone 5s J2, this is what it should look like:

and this is what mine looks like:

(to see it click on image and zoom to top left)

As you can see I damaged it quite badly, and the flex connector and everything attached would need replacement as well. Unless I could just do some sort of jumper set up with 18 micro solders connecting the plates to the connector wire. Let me know your thoughts, thanks!