So sorry , dear.

First, we do not diagnose folks here. We just support each other. That said, could what you describe be bipolar disorder. Maybe type 2? Yeah, sure. Irritability, depression , and erratic choices are part of the illness.

Can you get him to a board-certified psychiatrist? He needs one. Super bad.

Maybe start by saying you are worried about the depression. Maybe a med could help maybe. Like that. Easy and casual.

If he is opposed, an intervention could
be arranged maybe. Whatever the case, he needs help.

Hugs and support.