It’s easy to change your crosshair to a dot in Left 4 Dead 2. Here’s a quick guide on how to do it.
Step 1:
Open the Left 4 Dead 2 console by pressing the tilde key (~).
Step 2:
Type the following command into the console: cl_crosshairdot "1"
Step 3:
Press enter to execute the command. Your crosshair will now be a dot.
That’s all there is to it! Changing your crosshair to a dot can help improve your aim, especially at long range. Give it a try and see how you like it.