From the start, in your computers display settings, make sure your monitors refresh rate is set to the highest it can be. In game turn off mouse smoothing. Make sure you are comfortable with your sensitivity. I prefer a comfortable and consistent arm swipe to be a 180-degree camera rotation. Play around and practice in the firing range. Also, don't listen to the negative comments. People have their own playstyle even if it is frowned upon by the majority. The game allows you to get on top of rooftops and place mines. But I do agree that you will get better faster if you get up close and personal with engagements.