Resentment around sex

I am experiencing resentment towards my partner for various reasons and one of them is the lack of sex. When we do have sex, it is ok but not great for me as he doesn't like to kiss much. It all feels a bit...mechanical rather than passionate and/or curious. We have identified that we go about challenges in different ways: he leaves it up to circumstances sorting themselves out in a natural way, I problem solve and struggle to leave things pending. When I have brought up the lack of sex, he says that he wants to but things, life get in the way. We have sex an average of 2 times a month. I feel that if he really wanted to, he'd make time for it and create the conditions for it to happen. Due to the lack of sex my confidence and sexual expression are deeply affected and I now feel resentful towards what I perceive as 'excuses'. I am a passionate individual and I feel sexually dead and neglected and I notice that it angers me which is unpleasant for both of us. I am also at the end of my fertility years and this is somehow intertwined here in that I feel that he is adding insult to injury and confirming my fears around undesirability. I understand that for the intimacy to improve we'd both have to make an effort however I now feel very resistant to extend myself further because I have brought up the subject many times and feel that I have 'done my bit'. I bought nice underwear at some point too. I even suggested we take a break from sex some months back. And it has all resulted in him feeling pressure rather than carving out time for us as a couple. I am feeling very stuck in the relationship for other reasons too but do you think there is a way out of this resentment? #sex #relationship