If you are analyzing the tactical side of this episode, here is how Deku manages to survive:
She is arguably the most dangerous long-range combatant Deku has ever faced, using her Rifle Quirk to shoot from kilometers away with pinpoint accuracy. 2. Deku's Vigilante State
Using Smokescreen (6th user) is critical. Since Nagant is a sniper, she relies on line-of-sight. Forcing her to fire blindly levels the playing field.
Isolation, the weight of responsibility, and the moral grey areas of the Hero Public Safety Commission. 🔑 Key Plot Points