Need help finding my misfire problem on my 2014 f02

[Kixani]

So I’ve been having a misfiring problem in my cylinder 7 ive tried testing it by switching all spark plugs (problem still there) and I also tried switching ignition coils to see if that was the problem but the misfire don’t follow it just stayed at cylinder 7. So now I’ve ordered a new fuel injector just waiting on it to come my question is when I chang the fuel injector and if that’s not the problem what else could it be?