Sometimes it's really difficult to get used to Pubg when you don't get lucky to pick up a sniper or get killed every time before you get to use them.
A developer has made a training game with AI completely based on pubg. All the guns are the same and you play in very similar environments.
You customise bots, choose your equipment, and drop into a small arena, ducking behind low walls or trees and spraying bullets until all the bots are dead.
It's not supposed to be a 100% copy of the game but for as its $4/£3 on steam it's worth it for someone that wants to get used to pubg in a safe controlled environment.