If my headshot percentage is fairly bad (12%), would it be worth using the phantom more than the vandal considering I’m not fully taking advantage of the one shot capability of the vandal?

I went from plat 3 to gold 1 and I'm clearly way better than everyone in every match with an avg combat score of 380 and still lose every game. I almost always drop 30 bombs with my second team dropping 15-20 kills. Its no fun at all. I don...