Remember that headshots do more damage than body shots; try jumping with a shotgun to land a critical headshot when in close range.
In Fortnite, it’s possible to strafe opponents – in which you run from left to right or in circular motions while keeping your crosshair aim at an enemy – but doing so will often result in trading damage. Try placing a barrier up between you and them first. Follow it up with a ramp to get to higher ground. Move into a house, before turning and blasting whoever is chasing you. Remember that headshots do more damage than body shots; try jumping with a shotgun to land a critical headshot when in close range.