If I remember correctly, it should work just by ignoring this soldering point
Since these are power connections, 1 cap is enough, 2 caps for redundancy.
Also, before considering to ignore the cap, you can see if the ripped off pad is the ground...
Which cap is this exactly?
With 1 pad only, the cap is not connected.
And it looks like that the pads might still be there.
Also, by looking at the result on the other caps, the iron tip isn't giving enough heat for the soldering.
This is also...
Do you have another switch with working rails to testify it?
The step to test the continuity also tested the possibility to have a bad FPC connector
Continuity of the test points on the board to the 10 pins should verify that
Another approach might be just backup the nand you now have in the emmc
Mark it carefully e.g. DonorNANDwithMyProdinfoFW18.0
Then try to do the NAND restore with lower version fw like 10.0 or 12.0
Best is to match your original version
E.g...
To begin with, I usually start by making sure that all pins on joy con and the tablet are working.
10 pins on both sides, making them 20 pins in total, although many are ground pins
Look for bent pins or dirty pins
Then test continuity by test...
sorry, beein trying to find this file that's been right in front of me for a month now, only to find broken links, and google to prove that it's completely worthless.