After you learn HOW to shoot, start learning WHO to shoot.
If you’re playing a DPS, stop shooting the tank if your ult isn’t game-winning. The reason is because when you do damage to the tank, the enemy healers get their ults a lot faster, turning the tides in their favor.
An example is: hela can shoot tanks because her ult is good. Star lord can shoot tanks because his ult is good. But black widow SHOULDNT shoot the tank, because her ult is ass. Squirrel girl should not shoot the tank, her ult is ASS.
Basically, if your team hasn’t already killed the enemy supports, try to kill them instead of the tank unless your ult is good.