Do you have a cat or a dog? A bit of company might help.
Also, I would redecorate, esp your bedroom and treat yourself to some nice white crisp bedding. Create a calm sanctuary. Then a couple of nights a week have a nice hot bath or shower and retire to bed early with a good book or listen to the radio in bed.
Another good option could be joining a gym/somewhere with a nice pool and go for a relaxing swim/sauna in the evenings. That would be a nice way to meet other people for a chat too. Alternatively could you meet a friend for a swim once a week?
I would perhaps not watch TV mindlessly but do a bit of research and find some good engrossing films or series. I think having the radio on on the background a lot would help you.
Do you have a WhatsApp group on your road? You could always set one up and see if anyone else is in a similar boat and fancies watching a film/TV programme together once a week.
Pottery or an evening art class is another option. I would try for a balance of going out 2-3 nights a week for an hour or so, and a few relaxed, peaceful nights at home on your own where you relax and gradually get used to your own company.
Are you happy in your current home? Could you move into a apartment or similar so that you can hear other people coming and going? When my husband worked abroad a lot, I lived in a lovely Georgian garden apartment. We had a communal hallway and I would often leave my front door open if I fancied company or a chat. We all got on really well so it reminded me slightly of my uni days where we would pop into each others flats to watch a film etc. sometimes a smaller, but more open plan modern flat can feel cozy and more relaxing when you're on your own.
I'm sorry that you're going through this..it must be hard. But it probably won't be forever. It's just an adjustment..change is hard. X