The cage looks brand new, could be many many options as to why there are no toys...
They bought the bird and realized quickly it's not the bird for them
Shosh is right... :
They had him/her in a different cage, have another bird that took over the cage and bought this beauty a new one to re-home him/her in
Could hardly ever be in a cage and only sleeps in there
there's no way to know without asking...
I've seen worse than that
