My advice, would be to look at your daughter - he’s a good Father as you have said, but what happens as she grows up? Is he instilling his own blinkered idea of financial success=happiness in her?
Will he start encouraging her to ‘filter’ her friendships the same way he has enforced this idea with you? As she gains confidence will he use the sane tactic of pulling her back down as he has with you? Is that the life you want for her?
I have been where you are, no child (he forced me to abort), he had isolated me from my family, my friends systematically, he was so good at this I didn’t even notice it had happened until I felt alone and like it was too late to reconnect with those people.
It was almost as if everything that had made me who I am had been scooped out bit by bit. Like you I realised this was no way to live, I had no confidence, no idea of who I was supposed to be anymore, fear of the unknown and no support network to get me out. So it took a long time to take the plunge. I had no access to my own money (he was financially abusive as well as emotionally) so I secretly applied for a credit card which I maxed out when I found a place to move to - not the best planning I grant you but I was young and desperate! Then I started to piece myself back together. This process is still ongoing 8 years later but I’m much happier now, have my DH and twins and whilst I’m financially ruined for a little bit longer, I’d still make the same choice.
You don’t deserve this @Ranguski I can tell you know this, fear seems to be holding you back. But if you separate you will hopefully be happier, whilst we all probably envision that staying together with the other parent is better when we have a child - it’s much much more important that your daughter has a happy Mum, that’s not to say you’ve damaged her in any way, but I do feel that if you can step out of his shadow, there will be a relief that comes with it that can then fuel you regaining who you are, it’s not an overnight process - but it can happen 