TishaBuv,
This article reminded me of your challenge. Actually, I have noticed this is a challenge vented by a lot of different members I have come across on this site.
https://blogs.psychcentral.com/psych...tional-family/
As far as your relationship with your husband is concerned, some of the dysfunction you are dealing with in your family could very well be something taking place in your relationship too. Yet, it could most definitely be affecting/getting in the way of your developing or maintaining a healthier relationship.
Also, when it comes to your husband stepping away from engaging in a sexual relationship with you, it could be that his libido is off, especially if he is 40+. Women believe that lack of libido means lack of love, not true. And many men distance because they are embarrassed by their issue.