I’m at a loss

So about a month ago I figured out that my spouse of 15 years was doing his live chat-texting-sending money to random foreign women on the internet. When I confronted him about it he told me to shut up so I took my baby home (we were at chick fil a). The next day he was openly doing it instead of trying to hide it. When I asked if he was going to stop he said that he was leaving me for the following reasons:
1- I did not support his dream of opening his own shop ( we live less than pay check to pay check)
2- he feels smoothed because I what to be with him all of the time.
3-I did not send my friend and coworkers to him for auto repair (I did)
4-I would have my dad (a skilled contractor) fix thing around the house)

It took him a few weeks to actually move out (we do not have a lot of money). He found a room for rent with a girl that professed her love for him right after we got married. In the time he was still here, he changed the passwords to his phone, email, and bank. Before her changes the password to his email I seen a receipt that showed he spent close to $700 on live chat apps in a 10 day time frame.

I’m at a loss because he keeps yelling at me and telling me to shut up in front of our two kids. I know that I will have to coparent with this person for the rest of my life. But watching him throw money away, tell other women he loves them, and the verbal abuse is really getting to me.