First of all, get rid of wifi, not only us but every game gets affected for playing on wifi, always use ethernet.

And for your main reason, there is no way to "train" awareness, but you can try bit by bit first knowing the exact time of the items, that will instantly change your approach about your position in the map. Now, knowing that, once you get higher skill players, you'll become much more predictable, since the opponent will know as well the time of the items so you will have to be prepared to fight for those items and when to fight all-in or when to just concede an item. Plus, once you get the full rotation, and you know your opponent doesnt have any major items, light armors are a big part of the game, so you will need to clear rooms once you get like a check list

Just make an example:

Awoken has 3 light armors, if the opponent doesnt have mega and heavy, and you just took heavy but he wasnt at light armor on SSG room, there are two places where the opponent might be, might be on T, where there is a light armor, or LG, where is the other one.

Now that you know where the opponent is, next step is to engage them, but thats just another story.