I'm the wrong side of the pond so can't help too much I'm afraid.
I would search for your local parrot recuse organisations, if you have any nearby. I know all my local rescues always have birds available. I would personally avoid anyone trying to sell birds on facebook or selling/listing websites- some of those can be scams. I'd always insist on seeing the bird(s) first before making any kind of commitment. Unfortunately there's a lot of shady people around who will happily just take the money and disappear.