You complained about not being able to get kills in jets. Surely there are other ways to help in a jet, right?
I had to get 20 kills for an assignment, not because I chose to try to fly jets willingly and be useful in them. The only jet I ever fly is the attack jet, because I can actually support my team more actively by smashing enemy vehicles. However, the fastest way I figured to just get flat kills with jets would be to play Air superiority. A gamemode heavily dominated by super jet pilots and people also trying to get assignment kills.
I take pride in the fact that I have been able to keep my stats on the high end while at the same time being as objective oriented as possible with my gameplay. (Playing objectives/supporting teammates as opposed to looking for kills)
PROTIP FORM SOME JET cigarette: Learn to fly in third person, after attempting this I actually managed to go 7/2 in them, so, IDK.