I want to learn how for units to shoot rapidly once they spawn and disappear right after without using waits. If you have played We Are Friend or anything similar to that map, you should know what I mean by.

open up the map and take a look. certain units might avoid the cooldown.

You need to create a unit, then center a small location on an enemy nearby. Order the unit to patrol to the location. Set a death count to 3 and then kill when it reaches 0.

Basically, you have to make the unit patrol towards an enemy to make it attack quicker

You can make it patrol to a location that is the hero itself if you dont want to have it target a specific direction.

If you don't order the unit to patrol, they won't acquire a target as quickly, so make sure you do that, although you may need some sort of wait, even if it's a wait 0, which won't cause serious wait blocks.