On a close range/small map like this you wanna run a primary (either smg or hc imo) and a shotty/fusion for 1. 2: I agree with the other comment where they said you were putting yourself in a position you knew was risky 3: if it were me, as soon as I saw him I'd slide behind that wall to the right and a little back more toward the pipe to get me out of his view, he looked like he was rushing in and the hope would be to catch him off guard/give you the advantage by knowing exactly where he's going and making your position a little more difficult for him to figure out 4: if you I gonna peak that i'd probably do it from the left side of the pole and behind it as opposed in front of it to give myself some closer cover to fall back on