Since the colonist was fighting on home grounds it was easier to use the guerrilla warfare which is to sneak attack on the enemy
They were untrained and unorganized
Which way am I going again?
George Washington was not great on commanding the colonists on what to do but he did know what the British could be doing which gave the colonists a head start on training, and Washington also encouraged the colonists a lot so that it would give them confidence.
Shortage of men
Do you think we'll win a battle with 50 against 200?
There were many colonists who were willing to fight for this country to gain independence for their liberty, homes, children, families, and friends.
Shortage of supplies
Sorry, we don't have anything anymore.
Can I get one of everything?
Since most of the people in the Continental Army were ordinary people they had no idea how to be a soldier.
Since there wasn't a lot of men it was always hard to get stuff done because people would just leave.
The Continental Army was running short of supplies it became difficult around the time they would go to battle.