The Miracle of the Oil and the History of Chanuka

https://www.etzion.org.il/en/holidays/chanuka/miracle-oil-and-history-chanuka

Scholars have been greatly puzzled by the question of why the miracle of the oil is not mentioned in any sources earlier than the Gemara Shabbat, which was compiled some four hundred years after the miracle occurred. Many offer the answer mentioned earlier - that the miracle of the oil pales next to the miracle of the victory and the rededication of the Temple; after all, "Ten miracles occurred in the Temple daily." Even the Second Book of Hasmoneans mentions supernatural miracles related to the Chanuka victory. It was only in exile, when the light of the miraculous victory had dimmed, and only after the destruction of the Temple, when the light of the rededication of the Temple was similarly extinguished - that the miracle of the oil assumed new significance, as I explained above.