I'd practice your building as almost every opponent you come up against will be a building fight...

I cross platform to pc from xbox so i know how it feels to get one pumped.

Firstly, if you haven't already, turn on Builder Pro. Its such an advantage when it comes to building.

secondly, know how much damage the shotguns do from various ranges, carry the pump and semi. I kinda had the transferable skill from gears of war, never hard-aim unless you have right side advantage. Always try to get that. Never give up your high ground. Always start your fights with building a ramp, even if your chasing someone. Never shoot out in the open.

38 hours are nothing as far as I know, you must spend more time on it to excel your skills.
There was a time when I started playing fortnite and I got encountered with same issues, so I was going through internet and found some [ Register or Signin to view external links. ] it was bit useful for me.