Yes, have been there. I have raised my child alone for most of his life. I also felt it was very unfair that my exH continued with his very expensive life while my son, who was in private school while we were married ending up qualifing for free school dinners for most of his childhood. ExH has also being very skilled at avoiding paying the required amount of child maintenance.
There is a single phrase that got me through this and helped me to rebuild my life by putting resentment away: “Don’t be a victim, it disempowers you”.
I have owned up that there were clear signs he would be an arse throughout our apparently perfect relationship, which I chose to ignore. I also accepted that I could have left him much earlier on, he had not me locked in the house, but again, I chose to stay. By accepting my responsibility (not the same as all responsibility) I freed myself as I could change my life if I changed my choices. If I had placed all the responsibility on him, I would still be waiting for him to change, things to be fair and full of resentment as I cannot change him or what he does.
Young children are a lot of work, but I can assure you things will get easier as they grow up if you all work like a team, meaning everyone has an equal chance to be in front of the queue from time to time, including YOU. You are the most important person in the household because you keep the boat afloat and the children safe.
I have managed to raise my son on my very own, working full time. I am not going to say it was easy, but it was very empowering and we have had a very good and happy life despite increased financial concerns. I have now a wonderful partner and an adult son who I am very proud of.
Please do not feel pity for yourself, you need to see yourself as a survivor in all this adversity, not a victim. I am sure you have the strength in you, just be kind and patient with yourself, and take the ex out of your mind as much as you can. The moment you stop expecting him to change, you will be free and in control of your own life 💐