look at minimap very often, just like you look in your rear view mirror when driving a car in real life.
you can find enemy location by looking at tracers and muzzle flash
look at minimap even when firing to prevent tunnel vision and flanking
Play with the minimap enlarged (default H) and personal peference play with it unlocked.
bind zoom in/out with scroll wheel.
Lowering mouse sensitivity and DPI increases accuracy and makes it easier to control recoil. However, this is personal preference if you practice enough with a mouse setting you will get good with it. If you find yourself moving the cursor to far, try lowering the setting.
If you choose to do it, lower little by little. you can lower it, in one big go but it will take a long time to get used to it.
Lowering graphics settings increases frames and will make you able to see things clearly without all the glitter.
You can change the color of your reticle in the settings ini. The general color is red, hot pink or bright green.
Turn off tutorials and missions to remove some screen clutter.