Complex sentence: Shortly after leaving, David regrets abandoning them after hearing "Waterfalls" by TLC on the radio and returns to the carnival, begging them to come back with him and offering each a full share of the profits.
Split into simpler sentences: Shortly after leaving, David regrets abandoning them after hearing "Waterfalls" by TLC on the radio and returns to the carnival. David then arrives at the carnival, begging them to come back with him and offering each a full share of the profits.