Easy there, we’re only hearing one side of what happened, and even by his own admission, OP is leaving a lot out and even admits he is not the nicest person to be around, being “overall terrible”, and even being “an abuser”. His girlfriend was probably having a mental breakdown and his response to that was to scream at her to get the fuck out of his house and wasn’t willing to even wait to let her put shoes on first. Then when he starts to get pushy about forcing her out of the house, they physically fight, and she locks herself and the kids in a room and OP’s response to that is to essentially break down the door to get to them.

Neither of them are good for each other right now. Neither of them are helping the other and both need to spend time apart to collect themselves and get some help. This is not a healthy relationship and the screaming, cussing, physical fights and slamming doors will cause long lasting effects on their kids’ impressionable brains.