Agree with what's already been said.

As frustrating as it is, you are taking good, logical steps.

Has your brother always been this way? Or has something "dropped off" in the last few years?

I ask because your story reminds me a bit of how my dad slid downhill as he went into early dementia. Dad was in his sixties when it started. Your brother is a little young, but it's not unheard of either.

Either way, one option you might be able to look into would be residential care facilities. I learned from dealing with dad that this type of care facility is more common in some areas than in others, and that the cost varies too. Here, a residential care facility looks like a regular old house, in a regular old neighborhood, but it's a fully licensed and staffed facility where people who need full time care can live. The houses operated by the woman who took care of dad for a while, were set up to house about 6 people per house. All the basic costs of living were included in one fee.

My dad was particularly hard to house because he was physically strong and mobile despite his brain failing him. That made him a potential threat to other patients who were physically vulnerable- no nursing home would take him. I feel for you, I vividly remember calling anyone and everyone I could find a number for, trying to locate appropriate housing for him, and then sitting on the sofa between calls, sobbing in utter frustration. It was a lot of dead ends. Eventually, I ended up calling a random senior assistance group a couple of counties away, and they were the ones who got me into contact with a group in the local area. You just never know who will have your answer. Keep talking to people.

My advice would be to just keep calling and talking to anyone who might have a lead for you. If you can find a local organization that's something along the lines of a council for aging, someone there might have some ideas for you, or even another direction to point you.

Praying for you and my heart goes out to you.