android@clr~ $ lsblk -f
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
sda
├─sda1 vfat FAT32 E336-730F 775.8M 3% /run/media/android/E336-730F
├─sda2 ext4 1.0 deeb34fe-12f3-43da-a15a-d5bafebaae8b 828.5M 8% /run/media/android/deeb34fe-12f3-43da-a15a-d5bafebaae8b
├─sda3 ext4 1.0 bb99b31e-059d-42b2-84d0-e5d18118b5cf 84.6G 15% /
├─sda4 ext4 1.0 ab32383d-0597-403c-8f1c-d3b419550848
├─sda5 LVM2_member LVM2 001 0NAEw4-3iv5-uMV9-8qQy-JvLe-3QYj-4MdJ0C
│ ├─fedora-swap swap 1 8d43a610-b428-40cd-8a36-b9ed28b9fd3e
│ ├─fedora-home ext4 1.0 a8046952-0e31-4a79-859b-94ed16b3273f
│ └─fedora-root ext4 1.0 d8d9a5ab-5c1a-430a-acb3-d491a1c5d1da
└─sda6 ntfs router_data 4416017316016770 105.9G 62% /home/android/routerbind/4416017316016770
sr0
android@clr~ $ ls /run/media/android/deeb34fe-12f3-43da-a15a-d5bafebaae8b
efi grub2 loader loader.0 lost+found ostree
android@clr~ $
android@clr~ $ efibootmgr -v
BootCurrent: 0000
Timeout: 2 seconds
BootOrder: 0001,0000,002E,0018,0019
Boot0000* Linux bootloader HD(1,GPT,e38b7f80-b206-4738-9d94-e92f1765eb2a,0x800,0x192000)/File(\EFI\org.clearlinux\bootloaderx64.efi)
Boot0001* Fedora HD(1,GPT,e38b7f80-b206-4738-9d94-e92f1765eb2a,0x800,0x192000)/File(\EFI\fedora\shimx64.efi)
Boot0018* UEFI: IP4 Realtek PCIe FE Family Controller PciRoot(0x0)/Pci(0x1c,0x5)/Pci(0x0,0x0)/MAC(e0db55a63999,0)/IPv4(0.0.0.00.0.0.0,0,0)AMBO
Boot0019* UEFI: IP6 Realtek PCIe FE Family Controller PciRoot(0x0)/Pci(0x1c,0x5)/Pci(0x0,0x0)/MAC(e0db55a63999,0)/IPv6([::]:<->[::]:,0,0)AMBO
Boot002E* UEFI OS HD(1,GPT,e38b7f80-b206-4738-9d94-e92f1765eb2a,0x800,0x192000)/File(\EFI\BOOT\BOOTX64.EFI)
android@clr~ $
https://fedoraproject.org/wiki/GRUB_2
Be careful to follow the instructions for UEFI systems.
How are you running those commands (from live media or from the affected machine?)
That depends on whether you can boot the installed system somehow. If you can’t, you’ll have to use a live medium (or e.g. attach your disk to another system) and chroot into it to perform the operations.
