And how much more will he put you through?. Another 3-5 years of this will really do your mental health, fragile as it is, no favours at all.
Men like this take an awful long time, years even, to recover from.
I would think he is all sweetness and light at work; you are seeing his true nature i.e outright abusive behind closed doors. He does not have an anger management problem, he has a problem with anger, your anger, when you quite rightly call him out on his unreasonable behaviours. He does not want to seek help because he feels entitled to act like this and does so too because he can. You are his own personal emotional punchbag.
I am so sorry to read that your only parent died when you were in your early 20s.
Please contact Womens Aid on 0808 2000 247 whilst he is not there and discuss this situation with them. You are in an abusive relationship and this individual targeted you and deliberately too partly through your own social isolation.
Abuse like this too thrives on secrecy. Do not keep this a secret from anyone like your GP, a therapist or any MH professionals you are in contact with.
There is always a way out, never ever think that you cannot leave here. Womens Aid can and will help you here but you need to take that first step yourself.