I think that the south did have a chance in the Civil war because of their advantages. The souths advantages were great. For starters they had more motivation to hold out than the North since some people in the North didn't understand why they were fighting. Another great advantage the south had was the homeland advantage. The south knew their homeland better so battling there was so much easier. Another advantage they had were foreign help. Foreigners were expected to help since south had high production of cotton.
So even since the North had many more advantages the south still had a chance in winning the civil war so i think they still had a chance.