What's the primary way of obtaining these? I have 2.3k Flame seals at the moment, but I can't seem to find out how to obtain more.

I'm a 28 CNJ with no crafting or gathering professions. The only ways that I"m seeing are Imperial Devices and It Kills With Fire. I've gathered that I'm too low level to kill Ifrit, and nobody ever seems to want to do Imperial Devices. I've spammed Rabanstre's Ul'dah for about 15 minutes on three separate occasions with not a single tell, although I don't know if I'm the appropriate level for it.

Aside from this I know there are Company leves, but from what I've gathered, I'm too low for these as well. The chocobo escorts are all but deserted and are nigh impossible for me to solo. The only other source of seals I've found has been crafting supplies.

Is there anything I'm missing? I'd like to get a chocobo and I'm having quite the difficult time trying to figure out how.