Dear garudamon11
1- Your infantry probably has skirmishers in front, but they should be formed in a column when they attack. If the attack is repulsed, some less trained units will flee backwards and reform, and then try to attack again, etc. Better trained units are often able to keep the formation and slowly retreat.
2- That is normal. volley exchanges seldom lead to a lot of kills, since muskets were not very accurate by then. That's why the soldiers had to fire together in volleys, so that the cloud of bullets would eventually increase the killing probability. Volleys have a morale effect though and can precede an bayonet charge.
3- Orders take time to be obeyed, and some factors (e.g. morale) may lead to hesitation or refusal to charge. Specially if the unit's officer thinks that they will be uselessly blasted by the enemy artillery.
4- You are the army commander. You are not expected to micromanage your units. Concentrate on the big picture and big maneuvers and let your subordinate corps and regimental commanders decide which is the most appropriate formation in each situation, given the terrain, presence of enemy troops nearby, etc.
5- It might be correct, and probably they tried to do it. But have you carefully chosen the point of attack? Were you weaker or stronger there? Did you send only one corps, or did you support it with envelopment maneuvers (e.g. from cavalry) or a feigned attack by other corps? You should distract the enemy at some place, wait for it to move his troops to defend elsewhere, and then attack at the weakened spot.
António