Fixing a missing solder pad
You may be better off ordering a new board. You seem to have shorted something and destroyed at least one part (D5). There may be more hidden damage.
At least one trace has also been peeled back, it used to go to the  drain on MOSFET N1. It does not appear to have gone to the back of the board (there would have to be a hole for that).
Repairs on something like this are possible for someone with full information, fine soldering skills and reasonably decent tools, but without those things may possibly cause additional issues.