It is believed that Krishna had several wives yet only eight of them were crowned queens. He also had exactly ten children from each of those queens, hence eighty sons. With such a huge family he died alone in the woods, is there a message behind this? Also where was Arjun his most trusted friend and follower?
Well Krishna's death has some connections to Shri Ramchandra's boon to sugriv 's brother Bali
Hanuman natak 5.57
शुद्धिर्भविष्यति पुरन्दरनन्दन!त्वं मामेव चेदहह!पातकिनं शयानं। सौख्यार्थिनं निरपराधिनमाहनिष्यस्यस्मात्पुनर्जनजाविरहोऽस्तु मा मे।।
Shri Ram says:- O son of Indra! If you will kill me when I would be in yognidra, who enjoys happiness and innocent (ie during krishna avtar), then my sin of killing you will be atoned.
Note:- shri Ram being a god call his act as sin is just symbol of politeness and humbleness.
Lord Krishna is embodiment of virtue. As a virtuous person he atoned for his sins of previous birth by dying in this way which is just like Newton's third law "To every action, there is an equal and opposite reaction". Since he killed vali by hiding, jara, the hunter also killed krishna by mistaking his foot to a pigeon sitting on a tree branch looking at his legs rested under the tree.