Insufficient storage popping up when transferring app to SD card so I got this 36 GB SD card, and I've only used 2 GB on it, I'm on a Samsung J7 Neo BTW, and when I attempt to transfer a 5 GB game to the SD card, it stops halfway trough and a message saying &quot;insufficient storage space&quot; pops up, any idea how to fix it?
It's very possible you bought a fake SD card.
The markets are filled with unscrupulous people and businesses selling fake cards (bad eBay sellers are notorious for this).  They take 2GB-4GB cards, and make them look like much larger cards using illegal tricks.
See this link for even more details:
https://www.rmprepusb.com/tutorials/-fake-usb-flash-memory-drives
Update: In the comments, the OP indicated that they have good reason to believe their SD card is good (it previously held 25GB of data).  As such, I think it's likely their card is legit, but I'll leave this answer up, as it might help others in the future.