lsblk: failed to access sysfs directory: /sys/dev/block: No such file or directory

I am trying to copy the files on my ubuntu home directory to a USB flash drive. I am following these guidelines How to access a usb flash drive from the terminal?. When I run lsblk I get lsblk: failed to access sysfs directory: /sys/dev/block: No such file or directory. When I run sudo blkid I get nothing. When I run fdisk -l I get fdisk: cannot open /proc/partitions: No such file or directory.When I run cd media and ls I get nothing. I also ran lsusb, and I got unable to initialize libusb: -99. Ran usb-devices, got nothing. Same with dmesg | grep -i USB.

Getting kinda desperate. Help would be much appreciated.

Update: I run mkdir /mnt/c and sudo mount -t drvfs C: /mnt/c then ls /mnt/c and I got:

ls: cannot access 'DumpStack.log.tmp': Permission deniedls: cannot access 'hiberfil.sys': Permission deniedls: cannot access 'pagefile.sys': Permission deniedls: cannot access 'swapfile.sys': Permission denied'$Recycle.Bin'             Intel                  ProgramData                  Users          hpswsetup'$WinREAgent'              OneDriveTemp           Programas                    Windows        pagefile.sys'Documents and Settings'   PerfLogs               Recovery                     adobeTemp      swapfile.sys DumpStack.log            'Program Files''System Volume Information'   hiberfil.sys DumpStack.log.tmp        'Program Files (x86)'   System.sav                   hp

I guess what I did was mounting the whole windows system to WSL. How do I access my flash drive now?