now that Apex is crossplay will i get banned for using K/M on console?

Why bother console players start out with aimbots anyways.

You need an adapter to make Mouse work on console and even that's not considered cheating. So it is literally impossible to get banned for using a M+K on console, no matter what method you use. 

You're a scumbag if you use it, but yeah it's not bannable. M+K but with max aim assist, it's basically an aimbot. There's still aim sensitivity, but that's doesn't really matter.