That's a perfectly fine reason for leaving, but you're the one who wants/needs help, so it could serve you well to temporarily drop the judgments & assumptions,

That's a perfectly fine reason for leaving, but you're the one who wants/needs help, so it could serve you well to temporarily drop the judgments & assumptions, and just give a few of said ex-coworkers a try. If it turns out none of them can help you, you're out an hour or two and the cost of coffee.