Here is the tactic:

https://imgur.com/a/9hAd6XL

Here is the must know resource (first 3 smokes):

https://www.youtube.com/watch?v=_bOFeh5gEJQ

Do you need to be more confident with your aiming?
Try to change your crosshair with this popular community map.

Believe me it works !

Try it.

If you don't find a proper sensitivity with your mouse
this tool may help you to find a good one and feel confortable with your aim.

Try it out! [slikts.github.io]