Women being blamed for everything is par for the course. It's just one symptom of your pointless loveless marriage. You already know this. And I'm guessing you already know that you're on a hiding to nothing.
Sadly, ending a marriage with children involved is always a horrible business. It's natural for you to want to shield them from hurt, but this is the reality of life. The longer you leave it, the longer you are putting off the inevitable and the worse it will be.
I stayed in my awful marriage for too long because I was torn about how it would affect my children.
Then I ripped the plaster off and did what I had to do.
I felt terrible about it vis-a-vis the kids, feeling that I'd totally let them down by pulling their family unit apart.
The result? We became a really happy little unit of our own and I never looked back. Divorce was the best decision I ever made. Kids are now grown-ups and that awful marriage is now in the dark and distant past.
My advice to you is this:
Be gentle with yourself. This is a big decision. You have already made it. Take your time. Find your courage. Centre yourself.
Know that your children will adapt. They always do.
Brace yourself for the inevitable shit-storm that happens as you go through the divorce process. It doesn't last forever, and you will come out the other side.
Keep your eyes on the prize - a better, brighter future for you and your children.
And remember that you are not alone. Many of us have been where you are.
Sending strength and solidarity.