I am so sorry you are going through this. You are not alone. Every single word you wrote, I could have and did write myself. And for the last 6.5 years have read thousands upon thousands of posts containing the exact fatal narrative.
Our teen daughter told me she was having thoughts of suicide. And this was 3 months before we told her we were divorcing. When I tried telling him that she wasn't doing well -- I naively thought I could convince him to rethink the divorce if he only saw the damage he was doing to her -- he told me, "I am feeling wonderful! I am totally free of this circle of depression you and DD are caught in." It felt like we were coming down with the Black Death and he was happy to be plague-free. We were his wife and only child!
And the crazy thing is, from his perspective, he probably did try to do something about that "depression circle" around our daughter. He tried spending more time with her and delayed telling her about the divorce. After he dropped that bomb she then told him she had thoughts of self-harm. He told her "we put people like you who complain while having a good life to work on farms back in my home country," took her on a 3-week trip to Europe (replete with looking up women for flings), came back and complained to me about our daughter refusing to talk to him the whole time, fought with OW1, dragged his feet a bit, then moved out finally.
And when covid hit he had DD come and tell me, "Mom, dad told me to tell you he can't honor the custody agreement and spend 50% time with me because he needs to spend more time with his new girlfriend (OW2, 1 year-relationship) and her two children." I thank God so much that I had the flexibility at work then to chauffeur her around, be at her beck and call, take all her rage and show her unadulterated love and devotion. I can't imagine what would have become of her if I was off gallivanting like he urged me to do (they always want to assuage their own guilt by telling you to go date.)
It's been 4 years since the divorce and we haven't lived in the same country for 3. He recently asked to meet me over coffee and I reluctantly did for our daughter's sake. Turns out OW2 has now been swapped for another gf (I shouldn't call them OWs because they came after the divorce began, but just for clarity's sake.) He was upset with OW2 for not wanting to move him into her place because her 16 year-old daughter did not feel safe; he felt she did not trust him. (I thought: dude, you had it too easy. I never dated all this time, so you were never subjected to the debacle of some shirtless guy traipsing past our teen child's bedroom door in the morning! But seriously, how can you possibly not see why your gf won't trust you with her daughter? It may seem grossly unfair, but if you are a cheater others, including your lover who also cheated on her own husband, start to assume the worst about you.)
At some point he turned to me and expressed surprise that I was so loyal. He knew I stood for him for 5 years. I don't think he ever truly knew me. I was and am always loyal. You can count on me. I don't think he knows what that means any more. He is surprised and taken aback when confronted with it.
The only feeling I had left was numbness when I heard him say that. Unforunately in LBS land that sometimes passes as the only possible feeling. My only comfort was that I have not let any of this change me, with God's help. And with his -- as formerly he was a loving and supportive spouse. I am still loyal -- to my convictions. I will not behave with meanness and rancor no matter what.
He said: I married the wrong person. (I think he's always terrified I would say something along those lines, so he says it first. Plus he genuinely believes I am to blame for everything. Then again, I feel he's to blame all too often, so maybe we are even on that lol)
I wrote once about the above happenings on Reddit, trying to ask what happened to the protective instincts men are supposed to possess. Incredulity greeted me. One guy wrote: "Like other comments have said, i have trouble figuring out if this is just a well-written joke or not. "
I am, again, so sorry you are caught up in this. It does get better. You and your children should find joy and peace. I have found them frequently, through the help of God. I wrote all of this to let you know that you are not to blame. Nobody deserves the above.
I wish you and your loved ones joy and peace. I pray for us all.