The thing is these people you think should be helping you, they probably can't. Even if they wanted to, with their own issues and their own emotional baggage and histories they feel unable to consciously or subconsciously. Their refusal to engage with your pain isnt about you; its about them. Some people just dont have the emotional skills or its just too triggering.
Write them all a letter about how bitterly disappointed you are and then burn it and let it go.
Its also a really really common trait in people battling anxiety to fixate on what others 'should' be doing. I know-I have to watch for it in myself.
Also, in a major life event. Its REALLY common for people to let you down or pick sides. That happens to most people its not a YOU thing. But if you open your heart and mind just a little over the coming weeks and months-there are also people who will surprise you with their generosity and warmth. Just look at the people on here. I believe that people, the vast majority are inherently good.
Your trigger point seems to be evenings and early mornings. Can you develop some coping strategies for these times of the day. Its when the world is so quiet and you feel so alone. Can you read a chapter of your favourite book. Or watch an episode of your favourite tv program that gives you comfort.
Can you dig deep and pull the funds together for a one off deep clean? You might be looking at 60-100 pounds but the effect on your well being would be enormous. You have an adult son living with you-he has to play a role too. 'Hey son, the state of the lounge/my room is really getting to me could you help me out with it for a couple of
Hours tomorrow'? He will be pleased to see you wanting to get to grips and be willing. Could he contribute half towards the deep clean given it is his responsibility too?
Its great that you are having moments were you recognise the hours before were better. Progress isnt linear. It ebbs and flows.
Not all counselling has to be paid for btw and you can self refer in many trusts. Look into it.