Welcome to Fluther.
This could be interesting.
Have you learned anything – anything at all – about how you got to bankruptcy in the first place? It doesn’t appear so, if you “impulsively” signed up for a loan that will cost you over ⅓ of your net income for any significant length of time. How did you come to do that, and how did you even qualify to do that? At least you know the procedure for declaring bankruptcy, which may be a plus for you here.
You almost certainly can’t “avoid” the issue. That is, if the contract were for, say, a new car or some other collateral purchase, for example, then you could be sued for “specific performance”. That is, you could be sued to “do what you contracted to do”. So you can’t ignore this.
If the loan were something like a line of credit unfathomable, in this case then you could just avoid tapping it. No loan is extended in that case, and no repayments need apply.
As others have already said, you need to consult the loan documents themselves. Two weeks after the fact it’s unlikely that any cancellation privileges still apply, but read the loan papers. If you’re signed up to purchase some form of collateral and can’t get out of it, then your next best option is to find a way to sell it for what you can get for it (probably considerably less than you’ve signed up to pay) and cut your losses, even if you are probably underwater on the loan, or will be when you take delivery of whatever you’ve agreed to buy. Do it anyway, because you can’t afford this kind of drain for long. No one can, even someone who knows how to handle money.
Others have already suggested legal avenues, which may also apply. This whole thing seems fishy to me: you’re just now coming out of bankruptcy and you have somehow managed to qualify for a loan that no reputable lender would ever make. Did you lie on the application?
The other thing that may possibly be an ‘out’ for you is if the vendor / seller / lender somehow defaults or misses a delivery date, then you may have a clause that allows you to cancel for their non-performance.
But it seems to me that what you really need is a guardian.