For the bolded, yeah I definitely have a hard time leading my shots, especially with the non-automatic rifles. I also try to stop moving when I shoot, but I'm so used to moving the left stick to compensate for my right stick's aim. Do you think that's enough to mess up the bullet trajectory?
As for map awareness, I've logged in close to 20 hours now, but the maps are just so large and I find myself still so unfamiliar with them. It's just so frustrating when I die not knowing how and from where.
I feel like I follow all of the advice you've mentioned here, but I still suck regardless. I tried increasing the sensitivity, but then it just got to a point where I would completely lose control. I try to stick to the trenches and cover too, but I either die from somebody above (when in the trench and not having enough time to look up) or I'm on the wrong side of cover. Sometimes I would die, and I would scratch my head wondering how the other guy could see me.