empty abyss
movement is an integral mechanic in overwatch, and one of the biggest differences between this game and other popular shooters is the emphasis on movement
A lot of people with cracked mechanics in CS etc struggled when moving over to OW at first because the movement throws off your aim
You'll learn to incorporate your movement into aiming over time, just takes practice
One tip I was given a long time ago was to try aiming more with your movement as opposed to just your mouse, and it looked to me in that clip like you're getting there