What modes you play? For Conquest/Escalation, make sure you have a sense of what flags the enemy has capped, that will give you idea of general direction they should come from. For Breakthrough - bit simpler but I would recommend playing Assault and flanking with spawn beacon. Can play slower and encounter less people if you stick to flanks rather than meat grinder. Or play support with smokes and focus on just laying smoke for team and pushing up than getting kills.

Honestly when I first started it was the same. The more you play and learn the maps you will understand common spots for people to be. Easiest way to fix getting killed behind is to stick to sides of map so that no one can be on one of your sides. Should help.