Read this excerpt from “Road to Valley Forge.” The tide of the battle turned in their favor, and Washington’s troops “fled from victory.” But while they lost the Battle of Germantown, the Americans gained confidence. The battle showed them that they could hold their own against the professional British soldiers in an open battle.
This excerpt indicates that .

the British army was becoming worn down
the American army was too unskilled to win
Washington was unable to prepare his army
the American army lost a battle they could have won