sell the house through property agent. Don't let bank auction it cause you will lose even more money as it will most probably be sold under market price.

You have to looks for temporary amount to settle the outstanding amount first or else you won't be able to sell the house.

Maybe you can talk to the bank and see if they have other solution for you.

Your life seems to be in a mess. Try to get it sorted out.

BTW, did you pay your wife the money to get her to pay the house loan? If yes, then talk to your lawyer to see what can be done about this. You still have to pay her how much alimony?