I was trying to make an extra partition in order to reinstall Linux but when I decreased my Linux filesystem partition size on /dev/sda2 by about 60 GB and restarted my system, I was pushed into an emergency shell. Trying to mount /dev/sda2 onto /mnt causes me to receive a BTRFS error like
device total_bytes should be at most arbitrary-number but found arbitrary-number-2
failed to read chunk tree: -22
open_ctree failed
Within the emergency shell, I seem to have an extremely limited set of commands so I can’t use the btrfs command or pacman or anything of the like to attempt a repair my drive and I also have no external media on hand like USBs or CDs to load a back up CachyOS installation. Therefore, is it possible to repair my system? I also feel obliged to say that I really don’t care about the data on the system, everything of worth to me has been backed up elsewhere, all I care about is getting my system fixed. Any help is appreciated, please and thanks 
I don’t think it’s possible because you can’t mount your root partition. Even if it’s possible to mount it, to make changes you need it unmounted so you need an external environment to fix your system. Thanks.
Unfortunate 
Thank you for your help regardless.