There's no guaranteed way to improve drastically for everyone. The inherent ability of someone when it comes to games plays a big factor, but if you're a bad kid, you're going to remain a bad kid. If you want to get as good as youcan possibly get, keep at it. Practice is going to be your best bet, but do it in a way where you're looking for mistakes in your game. Maybe try playing some straight FPS console games, CoD or H5 would be a good bet. This will help to improve your overall reaction/aiming when using a controller. This way you'll get a solid 10-20 minutes of gun practice, vs 10-20 minutes of looting followed by a 5 second engagement where you die per game.
Once you're feeling a bit more comfortable in that regard, start watching people better than you. See what they might be doing differently than you in not only just combat scenarios, but how they go about engaging or disengaging from combat scenarios. Learning little tricks that give you a slight advantage over your opponent can make all the difference in a shooting game. I don't know if you can view replays in PUBG/Fort as I loathe the BR genre and plan to continue avoiding it until it dies like the piece of trash it is, but viewing replays and seeing how you died, what you did wrong, how you were outplayed if that was the case etc... can help you learn and become a better all around player.
Best of luck to you.
This post was edited by jadeoshbogosh on Nov 14 2018 08:17pm