A daycare cannot satisfy a dog as they are not the dog's boss. A dog is satisfied only with its boss and their affection. This can't be expected from a daycare which merely concentrates on money alone.
It's possible. He might have a hard time turning off the playing and rough housing he did all day once he is at home with you. He was with "his pack" and is having some problems with returning to acceptable human behavior. Give him quiet and calm time to help make the adjustment.
Dog's daycare can cause aggressive behaviour due to the presence of other dogs there. Neutering (may take around three weeks for hormone levels to settle) or taming (with the help of a professional trainer) the dog might provide solutions. If these things don't work, I feel there is no other better way rather than to rehome him/her.
Depending on the breed, some dogs perceive that they must be the "alpha" dog, or the one in control of a group. If your dog is around other dogs showing these same behaviors, he or she may very well develop an aggressive behavior. This may be very difficult to correct.
My loving dog hates daycare. It behaves very badly after returning from daycare. He jumps and express his joy. My dog feels lonely and individual care cannot be possible there.
I would say so. My little puppy i kept inside would go out and play with our outside dog and became increasingly rough. I'm pretty sure it was because of being picked on by the older dog, he was needing to stand up for himself.