Is my work, as an agent distributing the funds of a bankrupt merchant and selling his properties to settle his debts, considered Haram (forbidden) in Sharia or participation in a usurious transaction, especially since one of the banks is collecting its debt with interest, knowing that I cannot legally prevent it? And is my wage affected by usury?

There is no blame upon you for the usurious interest taken by the bank, as this is beyond your control and choice. Allah does not burden a soul beyond its capacity. A person is only held accountable for their own actions and is not questioned about the actions of others, in accordance with His (the Most High) saying: "And whoever earns sin, he earns it only against himself" and His saying: "O you who have believed, upon you is [responsibility for] yourselves. Those who have gone astray will not harm you when you have been guided," and "You are not burdened except with your own soul." So, if your work is permissible, the bank's actions, which you cannot prevent or participate in, do not render it forbidden for you.