I really don't want to be offensive, I want you to continue seeking advice here rather than giving up your bird, but I do have something to ask of you...
I breezed through your post three or four times before I understood what you were asking. You see, there is no punctuation, sentences, paragraphs or other things that make reading long posts easier.
Truly this is not to be critical, but I wonder how many other people didn't bother to read and offer advice because it was too difficult to understand. Folks here are very helpful and have a lot of wonderful advice to offer, but many are very busy also and don't have a lot of time to read and reread.
That said, if you use the search function on the top right of the screen and type "aggression" "attacking" or other similar words, you will get a lot of good advice about managing aggressive behavior and recreating a good relationship with your too.
Welcome to you and good luck!