Rooster's crop is always empty?

[Primchick88]

He couldn't drink because he struggles to reach the waterer with his beak. I lifted it to his height and he drank. I also gave him a huge meal, but he didn't want to eat eggs and corn. He opted for bread, tomato, and meat. I added an oral solution of vitamins B1, B2, B6.

He was a little more active after that. Only for a while he stood up and closed his eyes while trembling (why the trembling tho?).

After that he even tried to mate, but he fell on his side as he couldn't find balance.

His crop is always empty. He's the kind of rooster who gives all food to hens so maybe it is a vitamin deficiency.

I think the toe that he curls is always the same (one feet). But I'll double-check this in the morning (I'll also record a video). His feet are not visibly injured.

Currently he is sleeping on a nest as he can't roost or even get into the coop by himself

Fresh water should always be available and at the correct height for every bird in the flock. Dehydration is deadly and extremely uncomfortable for any living creature.