I’m so sorry you’re going through this, and many people have given some excellent practical advice. You may not yet be in a position to leave now, but do some planning as you can’t carry on like this.
My mum went through something similar. When my dad died fifteen years ago, she told me (and it was very difficult to hear) that she’d always been miserable during their marriage and had wanted to leave many times. His death was like being free, she said, and she went on to do many things that made her happy, and started a relationship with her childhood boyfriend.
She had never left my dad because she was scared about the alternative. She was worried about money, about being a single mum, about others’ reactions.
She was worried about me too, because I loved my dad. It was fear that kept her where she was. I don’t believe there was violence - she’d just fallen out of love with him (he could be a real arse).
Anyway, my mum had six years of freedom, living the life she wanted. I expect she wished she’d had many more years and greatly regretted not ‘being free’ sooner when she she was younger and healthier. She died nine years ago, and I am haunted by the fact that she was unhappy for so long, yet she put up with it. Her sister is still doing the same - married to a massive wanker yet it’s the deal she’s made for getting three children through public school and living a materially comfortable life. Now she reckons she’s too old to start again.
You know what I’m going to say - life is far, far too short. Get your plans in place - it may take you a while, but keep adding to your savings, built a network of support if possible, and don’t expect things to change unless you make a change. Please do it for you, because you deserve a better life than being shackled to this man.