Why was Arjuna defeated by tribal hunters after Lord Krishna departed his Dham (Heaven)?

Why was Arjuna defeated by tribal hunters after Lord Krishna departed his Dham (Heaven)? So, one may ask that why lord Krishna being Almighty was killed by a normal arrow of a tribal hunter, why he couldn't save himself? Some people tell it was a curse etc etc. But actually it was just a form of leaving the earthly body of God's Avatar to return to his abode. Sri Krishna knew that his mission was fulfilled and his time had come. So, same thing happened with Arjun. It was inevitable. Actually in that encounter, Arjun could not string his Gandiva bow properly which was like a toy for him! Also he couldn't invoke celestial weapons and the arrows of his two divine inexhaustible quivers were completely exhausted!! These were completely shocking and unbelievable. Actually these type of incidents couldn't be possible without divine intervention. This thing happened due to God's intervention or wish and a previous curse on Dwaraka Yadav women to be kidnapped by robbers. And also it was the God's message to Arjuna that his mission and work was completed. Like Sri Krishna was the “narayan” avatar of lord Vishnu, Arjun was the “Nara" avatar of lord Vishnu. And they both (Krishnarjun or Nara narayan) came to world as incarnation to establish dharma by destroying evil. And that mission or work was done. So like Sri Krishna, his time also had come. The questioner required to know the exact events happened on that encounter of Arjuna with those tribal hunters or robbers before stating that Arjun was defeated which is totally wrong. What do you mean by defeat? In true sense Arjun was never defeated by them. Those tribal robbers never came with the intent to fight with Arjun, those cowards just came to loot wealth and womens. So first of all, here is no question of defeat. Now coming to points what actually happened in that encounter… 1) The robbers in large numbers attack them with the intention of abducting women not to fight Arjuna. So they started taking women at many places from all directions. So it might be possible to fight with opponents who were coming at you from many directions but it was impossible to prevent the robbers who were running away taking nearby women from multiple directions in a large concourse. 2)when Arjuna warned them, robbers paid no heed to him probably as he is the only bowman and at very old aged by that time. But Arjuna lifted Gandiva and succeeded in stringing it but with difficulty. 3) Then Arjuna intended to finish them with celestial weapons but failed to invoke them. 4)Then he started killing the robbers with normal arrows. After sometime the shafts exhausted in his supposed inexhaustible quiver. 5) Still Arjuna continued to kill robbers by striking them with the horns of the bow. 6) Then those remaining robbers retreated from the presence of Arjuna and Arjuna resumed the journey. So, actually Arjun never run away, rather those cowards Robbers fled away with that much wealth and women they able to capture. Arjun was singlehandedly saving those thousands of women in spite of the fact that his celestial weapons refused to come. Moreover fighting a battle and handling women from Robbers coming from different direction suddenly, these two are completely different things. But still Arjun was able to rescue and save many Yadav women including Sri Krishna's wives i.e Rukmini, satyabhama, jamvabati and Krishna's great grandson Vajra(probably the only descendent alive of Yadav clan after complete destruction of Yadavas), son of Aniruddha. So, you may call it “failure” to some extent (but calling that too is not entirely correct as he was not completely failed), more specifically failure to rescue and save some of the women but you can never call it “defeat”. Arjun was never defeated in Mahabharat. He was almost invincible and only undefeated warrior in Mahabharat epic. He had defeated all celestial beings including Dev, danav (demons), yakhs, nag(serpent), illusionist Gandharvas and apart from that he had defeated all great maharathis (in Virat war) singlehandedly. Those coward robbers were just like small insects in front of him. If celestial weapons came to his chanting to invoke, then He would have finished them into ashes in just few seconds. :) It is very clear that Arjuna did the best a warrior can do without celestial weapons and Even arrows to rescue the women who were cursed to be humiliated and abducted but so as the curse couldn't be avoided, his failure and even krishna's death before this event were inevitable..