OP, your problem isn’t your house, it’s your head.
Your language is melodramatic, impulsive and self-obsessed. Crying all the time in front of your kids is plain irresponsible parenting. I’ve had plenty of mental health issues in my life but whatever happens, you pull your shit together in front of the children even if you’re screaming inside. Your distress is not their cross to bear.
I’m being blunt because you don’t seem to be sufficiently taking on what others say.
Every house has snagging issues. No move is “perfect” so you sold yourself a delusion. Accept that like the adult you are and resolve to find a way out.
I found CBT incredibly useful. A large part of it isn’t “why do I feel like this?” but rather “here’s where I’m at, what concrete steps can I take to make it better?”
You cannot go back. Stop thinking you can. You can only move forward, so how can you make Forward good for you and your family?
See if you can access counselling or CBT, put on your game face in front of your children and all the very best of luck. In time this will be a loved home.
(Sorry if it’s harsh, I do honestly wish you well)