Just wondering how anyone that isn't rich affords to live alone this day and age

I am faced with a dilemma and looking for advice. I currently live with my wife and pets in a house in NJ. Lately there has been a lot of tension for disagreements on our future wants and dreams in life and long story short I may need to start over and move out soon. Unfortunately I don't make a lot of $ as I'm partially disabled and considering how inflated the housing/rent market is I honestly don't know how anyone can afford to live alone. I have always had help splitting bills with family and later roommates and now my wife and considering I live in one of the most expensive states to live doesn't make it any easier. I'm sure others can relate when everything is getting more expensive yet my paycheck remains the same. I really don't know what to do as even rent at a small hole in the wall apartment is insanely more expensive than splitting a mortgage in a nice size home with interest rates from 2016. There are so many pros and cons to staying together and splitting apart but the biggest hurdle to splitting is definitely financial. Also my dogs are my life and most apartments don't allow their breed. Then there's roommates to afford bills which defeats the purpose of this sub and living alone. Im just very torn but looking at what to do in the event I get kicked out after an argument. Thanks