Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. To proceed:
It is not appropriate to say: “Circumstances willed it” or “Destinies willed it”, because will and divine volition are attributed only to Allah تعالى, and should not be attributed to circumstances or destinies.
The word “circumstances” refers to conditions or situations, and circumstances have no will of their own. Likewise, “destinies” refers to divine decrees, and the decree itself has no will of its own. Rather, the One who wills and intends is Allah, the Almighty.
As for saying: “Allah’s decree required such and such” or “Allah decreed such and such,” there is nothing wrong with this, because the decree is attributed to Allah تعالى in the sense that it is His determination and ordainment.
Therefore, the correct expressions are: “Allah willed such and such,” or “Allah’s decree required such and such.” One should not say: “Circumstances willed it” or “Destinies willed it.”
And Allah تعالى knows best.