Can't Create Bootable USB on macOS Catalina

Question

After trying for hours, I'm still unable to create a bootable USB on macOS Catalina. I'm trying to boot into a Manjaro session. Steps I've taken.

1. Download Manjaro iso.
2. Format USB to FAT32 with GUID Partition scheme (I used Disk Utility here)
3. Unmount USB.
4. Run command: sudo dd if=./manjaro-kde-18.1.4-191210-linux54.iso of=/dev/disk2 bs=1m where /dev/disk2 is the USB

After this, the output of diskutil list disk2 is: /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *30.8 GB disk2 1: 0xEF 4.2 MB disk2s2

Furthermore, Disk Utility reports that the USB is not bootable. When I restart the Macbook to select the startup disk, the USB doesn't show up. I tried using Balena Etcher, but the results are the same. I also tried using another Linux iso, but again, the results are the same.

Is the process I'm going through wrong or outdated? I can't find any other methods online.

EDIT: This is all the information from Disk Utility after burning the iso.

Volume type : Physical Device BSD device node : disk2 Connection : USB Device tree path : IODeviceTree:/PCI0@0/XHC1@14 Writable : No Is case-sensitive : No Volume capacity : 30,765,219,840 Available space (Purgeable + Free) : 0 Purgeable space : 0 Free space : 0 Used space : 30,765,219,840 Owners enabled : No Is encrypted : No Can be verified : No Can be repaired : No Bootable : No Journaled : No Disk number : 2 Media name : SanDisk Ultra USB 3.0 Media Media type : Generic Ejectable : Yes Solid state : No S.M.A.R.T. status : Not Supported