If you are working on the car yourself, you need a repair manual. Try here.
I can’t find the cylinder numbers on the internet.
You don’t say, but I am guessing you have some sort of generic code reader that is telling you there is a misfire in cylinders 7,6,5 and 2 and you want to change the coils on those cylinders, right? 4 of 8 cylinders are mis-firing, it is pretty unlikely 4 coils failed at the same time. Sparkplugs, maybe, replace all 8 first and see how it goes.
Unless you just want to toss parts at the problem, you need the manual with trouble-shooting trees included.