Hey guys, I have a few resources you could use to improve as a decent player.
Deathmatching will help you improve your aim and awareness.
A good dm server I use is thefragshack.com
Set your crosshair to something useful and comfortable.
There are several maps in the workshop that allow you to do this.
Try to learn strategies for maps you play.
Learn some new smokes or angles to watch. This is honestly a large portion of your gameplay and will determine if you can get the first shot off most of the time.
Take breaks when you tilt.
This isn't really a resource, however it's a strategy that will let you not make stupid mistakes and just fall off your game.
Aim training maps
There are also several of these in the workshop and they help you with reflex training and adjusting to switching angles.
These are some good ways to improve as a decent player, around gold nova 3+ when you start to understand what you're doing.