Professionals pay close attention to the radar more so than ordinary players. Using the minimap is an important game mechanic in CSGO, just the same as listening to sounds.
On the radar, you can see the position of your teammates and which areas remain open for the enemy. If opponents’ activities become visible to your teammates, you will also see them on the minimap.
Even if not one of the teammates gives proper information, you can sometimes feel the game situation on the base of minimap.
Set up the minimap and use it effectively.