That will not work … Try etcher or maybe better go with Download . Ventoy as will let you copy the ISO directly and still use that USB Stick for data …
Won’t work - and booting from optical device is very - very slow.
Won’t work
The only method viable for writing a Manjaro ISO file is the dd method.
Rufus and Etcher can do this - as pointed out by @bogdancovaciu - with Rufus must not select any option but the dd method.
Ventoy is a little different - the ventoy preparation tool creates a bootable USB with one big empty partition and a 4M efi partition at the end and you must manually copy the iso file onto the empty space of the stick - the upside to this is you can have as many iso-files as your stick can hold and each one is bootable from the ventoy bootmenu.