Welp, did you manage to fix this? Usually you can't just shove a BGA-component back to where it sat in the beginning.
I'd suggest you get the capacitors and resistors from Aliexpress. Usually they're a lot cheaper than those found at farnell or Reichelt Elektronik and you can even get like an assortment (50-100 values or something) for like 3 bucks.
Regarding this: Check some of the pins that are on the left hand side of the package marking.
Also you shouldn't use the heat gun anymore, I guess. The PCB shows severe damaging already and it could delaminate, if you're going on like this. Only exception is, if you want to reball the BGA component from the post above. Then you could use a stencil, 185°C solder paste and try to solder it on with some flux at around 5-10% airflow with a tight nozzle.
I wouldn't be too worried about the last image, you just scraped through the solder mask by the looks of it.
Also: If you only got the Yihua/Saike/... soldering Iron, I'd strongly recommend you buy a Hakko T12 clone (Something like the T12-952). They are FAR better in regards to temperature control and a bit more 'beginner friendly', since you're able to work way more controlled with a JL02 or ILS soldering tip.
i guess these are 2nd most hated after the sd card reader connector
but first clean with wick the solder away
