Protect your daughter. Your number one duty - and privilege.
And you can't do that unless you face facts and start to protect yourself.
You're at a crossroads.
You're in a relationship with an abusive coercive controller.
So is he - with his mother, and that won't change.
You're considering taking a huge step of getting your own home with him; which will pull you deeper in.
Your daughter is being presented with the lie that a husband/father drinks, uses drugs, gets up to who knows what himself, is his own mother's flying monkey, accuses you of infidelity and tries to drag his own child into the paranoia.
The fact you're reaching out to ask us suggests you know all this is true.
There may be something wrong - a brain condition, a mental health issue - but you're not his repair kit.
Time to ask yourself - is this the future, the model of marriage, parenthood and men I want my daughter absorbing and believing?
You need practical help and Women's Aid offer just that.
Stop saying 'I can't' and start saying 'I will - OK, now how am I going to start?'
https://www.womensaid.org.uk/womens-aid-directory/