It is so clear that you'd been plotting revenge and the resent you are so miserable is because it backfired. In the end, you stayed with him and chose to have two children. Of course leaving someone 2ho has control9ver you is not easy, so good on you to have done so, but you waned him to pay. You planned on going without warning him and taking your two kids, then grtas much as possible out of the divorce and get a hefty maintenance. You'd worked out that even reducing your income significantly, you'd be OK.
Sadly, he defended himself and you didn't get what you wanted. There is probably an underlying sense of victory from him that must be hard to swallow, another way of him showing his control over you.
But what you don't seem to see is tsht instead of fully liberating yourself from him, your resentment is making I'm still control you. He has what you wish you had. He belives that you regret leaving him.
You really need to break free. You have up a life of comfort and luxury but you got your freedom from an abuser, surely that's more important than anything else? You didn't get your revenge, so what? Life is not about punishing people for what they do to you, it's about breaking free, physically and mentally from them. Let go.