Instead of focusing on sugar (one ingredient among many) I would refocus to push out every last bit of ADDED or processed sugar you can from your diet. How do you tell the difference? Well, an apple has sugar but those are in the apple to begin with. When you grind it up into apple sauce and add sugar - well, then some of the sugars become added.
So if we were to do this and go through your diet, I'd get rid of the sugared cereal, sugared peanut butter, juice, apple sauce (which undoubtedly has added sugar) and the granola bars. Surely you can come up with better beverages and snacks where added sugar is a minimal or absent ingredient.
Activity does not really give license to consume sugar with no upper limit. Honestly you should be able to get through a workout with a solid meal eaten 1-1.5 hours beforehand and perhaps a smaller snack 30 minutes before. Refueling afterward within 1 hr by eating a square meal also helps. This is something that a lot of amateur/high school athletes simply get wrong.