It am starting to think you are not a bird person. You NEVER bite a bird back or hit it EVER.
Birds to not learn anything by being grabbed an force except maybe to mistrust any human ever again.
Birds are not dogs. Now well they ever be. If you want a dog get a dog not a bird.
Patience, love, understand and lots of time are what a bird requires. As far as him being grateful birds do not think like that. He is in a new scary place. With new people and things all around him. Unlike dogs birds are the food that is hunted so it takes them a while to learn to trust.
Oh and just a heads up we don't like for any cuss words to be used on this forum we have several people here underage and you can express yourself without using them.
If you think you well ever hit your bird then for anything then I think it is time to find it a new home before you do him any harm.
Good luck