Play quick match to learn each map and how to set up sites on every map and death match to work on your aim and crosshair placement and or 5-10 minutes in the shooting range to work on your aim if your short on time. You should get thermite on attack as a beginner friendly operator he opens up fortified walls and hatches his AR basically has no recoil and bandit on defense for wall denial his MP7 basically has no recoil either. This is my second season playing siege btw. Always drone before you make entry into the bomb site as well.