TL;DR
* A retake in CS2 is a crucial moment in a round, almost always decided with grenades.
* The main grenades: Smoke, Flash, Molotov / Incendiary, HE.
* Throw types: Standthrow, Jumpthrow, Runthrow — each for different situations.
* On Mirage, Inferno, and Ancient, correct trajectories for smokes, flashes, and molotovs for each plant