One more quick question before I give up for the night, because I'm so tired and defeated, ha - what exactly is included with my keys? If I'm somehow able to get a new Switch later down the line will I be able to use those to restore things like save files that were on the NAND? Because I was able to get my keys but I can't dump my whole NAND for some reason because Hekate won't detect it, it's super weird but at least I got something.
Sorry for my ignorance, it's been a long time since I've done anything with CFW and all this is frying my brain. I'm sad haha.
If your saves are on your SD card, the prod.keys include keys to decrypt those save files.
However, I doubt you could use them on a newer switch at that time since they are not hackable.
Without having the hardware in hands, it is difficult to troubleshoot this kind of issues.
The issue could be the NAND chip itself or just the eMMC board.
If the issue is the eMMC board, you could remove the NAND from the old board and solder it back to a new one.
If it is an intermittent issue, you might be able at some point to do a full backup of your nand flash from hetake and flash it to a brand new eMMC/NAND.
You might also be able to read the NAND on your PC by using a custom SD Card Adapter.
I sadly can't garuantee that any of those would work and they some of those options requires soldering skills.
I mean, you are not out of options if you want to try recover your console but assisting on the previous point I mentioned in this reply is not really possible on a forum.
I suggest that you try to find information about those or find a technician located in your area that could try those for you.
Keep your hope, you never know.