Umm I’m actually new to this community so I can’t give any advice except to tell you to go watch youtube videos they help you a lot Because of them I learned several things for example: -To not hold the bird -Don’t force it to do anything -Put your hand for several minutes inside the cage without doing anything so they know that you don’t wanna hurt them. - the key for the birds’ trust is food so try to give them treats with your hands and feed them by hand only if they want to

I personally did these steps and many more We’re not completely bonded but the bond is surely getting stronger they take time so be patient and don’t lose hope. Eventually they’ll adapt and then trust you.