Should I leave him

Should I leave? I have been with my fiancé for 4 years and I do truly love him with all my heart, but things have gone down hill so much lately our sex life is horrible , he yells and screams at me for no reasons other then me trying to explain something as how to play Zelda . He constantly belittles my religion which is one of the most important things to me. He hates my dogs and loves his he says things like well if my dog does this your dog can’t for example. He keeps picking his dogs eyes crusty🤢 I told him to stop because he cut his dogs eye now I’m treating his red and gross eye so I told him to stop so he told me I can’t treat my dog for her mange ( from allergies) like what?! He couldn’t really give to shits about me he’s not the man I fell in love with. But now that you have the idea of the bad. If I leave I don’t have a job, I dropped out of school to be with him , I lose my dog who is my best friend (don’t have any friends) I don’t have anywhere to go , don’t talk to my family because they didn’t like me being with him so I chose him over them. I lose my life I spent 4 years building. But I’m miserable and deep down I hate him but I really have to trust in God things will get better idk😞😕 I don’t have anyone to talk to about all this it’s just me and him 😪 it’s not all his fault I am whiny sometimes and grumpy. But I’m at a breaking point. I’m the end I really feel like I will end up having to marry him because I’m truly not in a position where I can leave .