Itipiso bhagava arham samma-sambuddho vijacharansampanno sugato lokvidhu annutaro purisdhammasarthi satha devmanusanam buddho bhagavati Pali chanting to show the nine great qualities of blessed one tathagat samyak-sambudda shakyamuni vandami bhanteji

Wisdom is cultivated via contemplation of the Dhamma, and not by reading the abhidharma. The Buddha's followers attained wisdom and enlightenment hundreds of years before the abhidarma was written.

Does bodhisatva go to past..... Does can we go to past...?

During the Buddha's time , he taught the Dhamma vinaya, which are the sutta and monks disciplinary code. Buddha never even heard of the Tipitaka. That is the later creation of his followers. Always insist on the original Buddhism. Do you want to listen to the Buddha in the sutta or listen to his followers instead ?

You don't need abhidarma to eradicate mental defilements. During Buddha's time his discourses were enough to gain enlightenment. The Buddha gave the shortest teaching to Bahiya and he gained enlightenment, no need for abhidarma. Besides abhidarma was written hundreds of years after Buddha's passing and some ares contradict the Sutta. Some info in abhidarma are useless like how many types of thought moments and consciousness, which don't help to gain enlightenment. Besides, the Buddha never taught such things.