I disagree that situation is hopeless or it can’t get better. It certainly could. Not if you stay though. If you stay, it’s likely will be hopeless
You need to see a lawyer and financial advisor. You can’t rely on this man to make any viable decisions re selling or moving. You need to see a professional who can help you to look at options. Why asking your husband who’s not in any kind of shape for that? Those times when women were solely dependent on men for decision making are long gone.
If you continue focusing on what’s best for your husband then yes I agree it’s pretty hopeless. Why not focus on what’s best for your innocent children and you?