Anyone else having trouble adapting?

I’d consider myself pretty decent at Halo 4, my K/D wasn’t the best in the world but it was positive a couple of thousand kills, when it came to one on one fights with the same weapons I’d win 9/10 times. Jumped into Halo 5 and while my K/D is just about positive, I don’t really seem to be getting the hang of things as quickly as others, I’m losing most of my one on one battles, and I’m missing a lot of my shots.

Not sure if I just need practice, but it doesn’t seem like everyone else does, is it just me having these kind of problems?

It was hard for me and at first I literally naded’ my own teammate because the controls were so different. I don’t think I got a single kill either that game. But I think I have gotten pretty good but that doesn’t mean it’s easy, nor was it easy for me to get where I am. This is completely different than any halo before it in terms of getting used to and I don’t like that.