Im wondering if you are mixing up his spending money and his emotional coldness, and then judging your worth in his ability to deliver either.
You say you were not financially demanding - often people who deprive themselves like that - who cannot set expecations for what is a reasonable expecation of someone they are a partner with, because they dont want to be seen as (the terrible term) a gold digger - well its because of a serious lack of self worth.
So you are focusing on his miserly behaviour towards you as a judgement as to how much you are valued by him. Whereas his emotional coldness is registering a similar level of care.
You say that you broke. That things were good and then life threw spanners, and that you broke the marriage. And he is waiting/ hoping for you to get better. However you have CPTSD. It may be that until that is addressed and you can move forward from it, you may not get better, and it may be the root of the low value you hold of yourself.
Can I ask - before you went into psychosis - were your earning fairly equal? And was your contribution to running the marriage equal? And the hours you worked? What did you do together that made you feel fulfilled as a couple? That made you feel loved?
It feels as if you were always carrying a much heavier burden - Im assuming that you were earning money and contributing into the household - you say you were in charge of the finances, so why did you not just spend the money you needed for work? why did he get to veto stuff for you when he was buying things for himself? I have not read your other threads so Im unsure if he is a high earner and you were on a pittance and had pennies whilst working 3 jobs. And doing all the household stuff?
because I think of course he was happy. He had a partner who demanded little, either financially or emotionally, who kept house for him.
Things have changed now. Your psychotic break means that you are beginning to unpick. And some of that unpicking is revealing that there are some serious cracks in your marriage. Whether it is your fault or his fault matters not. It doesnt function and it doesnt serve you. If you have unresolved CPTSD you need to get help - ideally through the NHS (or even just signposted), because they will give you what you need rather than what you want - its very easy to fall into the trap of a gentle therapist who avoids looking in that dark place - and that needs to be done alone or with an emotionally available supportive partner - which yours is not.
I would look and see if there is anyone who offers DBT in your area. I would also look to see if you can find any advocacy help to apply for PIP. someone functioning on 20% is not functioning. I would hazeard that you dont know what healthy functioning is.