For beginners, go to this location for a gun, sorry for bad quality : r/ dyinglight
Dying Light 2: How To Get The Finger Gun
Dying Light - Gun Psycho Bundle - Epic Games Store
Dying Light: How to get Guns (FREE Pistol) - YouTube
Dying Light: How to Get Your First Gun - YouTube
New Dying Light 2 Stay Human developer update highlights weapon mechanics - Gamepur
The Best Guns In Dying Light Platinum Edition
POSSIBLE SPOILER: A large pistol stash on top of a building in the Slums for those wanting guns early on(must have picked up or completed side quest with Dawud) : r/dyinglight