You are in a comparable position to someone recently widowed, to the extent that you are suddenly alone and trying to find a new way of living on your own.
The advice often given to widows, is to make no life changing decisions, like moving house, for a year after the loss, in case in your grief and confusion, you make a decision you later regret. As you have no idea where you want to go or what you want to do, I would take your house off the market and stay put while you work out what your new life is going to be like.
Take time to get to know yourself, your needs and your wants, explore options.If you can afford it go on some courses, try exploring your interests, U3A, even your local WI. By this time next year your mind will be clearer, you will have a better idea where you want to go and what you want to do. Then sit down and plan your new life and possibly move house, but doing so, knowing where you want to go and what type of property will suit your new live. Festina Lente (make haste slowly) should be your motto.
Meanwhile every sympathy in your current plight 