Welcome, Iso, glad you are reaching out and sharing about your situation.
I hear your anxiety and panic. Can you take some time to breathe and calm yourself a little. Your nervous system will be highly activated which means you cannot think clearly. I have been through that. Deep breathing really helps. Slow in, hold, slow out, wait. Then repeat. There are lots of info on this on You Tube. Really helps.
Once a little calmer, perhaps consider that you and your child would be better off without a person who treats you both so appallingly.
Have a read around and you will see that the behaviours he is using are very typical of an alcoholic.
He is blaming you, deflecting his bad behaviours at you, making false promises, gaslighting (him lying that you haven't said certain things to hm), the list goes on and on. Read around and take comfort from seeing this is about him protecting his "right" to drink and do what he wants.
I really hear you, this was how it felt for me too. The absolute fear our body generates from being around people like this.