Dies your husband ever walk the dogs? If he's glued to the tv every day, I guess not. Do you let them out in the garden and does your husband fee, groom and clean up after them? Again, I'm guessing not.
If you apply to be allocated a 1 bed council house, flat or bungalow, I think you'll be waiting a very long time as you are not homeless and, if you leave you'll be, as they say, intentionally making yourself homeless and they will suggest you look for a private rental.
Private rentals where dogs are permitted are much harder to secure.
Your finances need to be looked at. You'll need a deposit of 6 weeks rent plus the first month in advance and many agents won't take people on benefits.
There are also EA fees who h can be considerable.
Broadband...another outlay you will have to pay out of your own money plus usual utilities and 75% of the council tax bill.
I know a lot of negatives sounds harsh but transitioning into single living can be daunting for some.
If the accomodation is unfurnished, you would need furniture and all the things you now share with your husband...bed, bedding, crockery, pots and pans, chairs and table, curtains etc.
You need to consider it all very carefully. At 59 you would be liable to pay £154 for a tv licence and you'd need to buy a tv in the first place.
Moving out is not going to be an easy job and, as you're not in an abusive relationship, the council will have further reason not to allocate you one of their properties.
The same would apply if it were your husband who left home.
Please consider how you can make life more pleasant where you are.
I wish you luck and a happy future.