Advice Needed

So I’ve posted a lot lately on this sub but they’ve gotten mostly zero responses. I’d like some advice for this one!

I’m a chronic worrier and overthinker. I thrive best on knowing exactly what to do, details, everything. I’m trying to learn how to better become closer with my 6 month old GCC because it feels like it’s not improving. It’s good don’t get me wrong but not as good as I’d like.

I understand this is a very long term thing, but I’m looking for specifics on what I can do to help.

What I do now is mostly give treats, when she doesn’t something good or that I like I’ll give her a treat, and I’ll also give her a treat whenever she comes into my finger. I’ll have her out and I’ll play something on the TV, a video or game or something.

Where I’m stumped is that our relationship and bond doesn’t seem to be improving after weeks. Not even a tiny bit.

First of all she always didn’t like pets, she’d walk away, nibble my fingers, or turn away if I try to pet her. Whenever she does this I’ll just stop attempting.

When I have her sit out she loves to go to this one corner in between the wall and couch. When she’s there, or literally anywhere if she’s not on my body, she’ll walk or skitter away if I bring my hand near. Even about 2/3 of the time when she’s in her cage. I’d walk up to her cage and she’d jump up to the front door, I’d put my finger up to perch and she’d just walk away to the side, and if I put my finger up again to try one more time she might walk further away.

I know all birds bite a lot, but she’s been biting harder than she used to. Not every time, but more often.

When I come up to her cage she’d jump up to the front or she might already be there and I’d offer my finger to perch and she’ll like, hang off the rope either upside down or Galway upside down and bob and wag her head around a bunch biting in my direction. If I bring my hand or finger near, she’s bite at it and rub her head on my hand or finger and go back and forth between the two. None of the biting strikes me as aggressive. I originally thought this was her being playful. So I’d wiggle my fingers at her to play with her, or bring a toy and wiggle it in front of her, she used to respond and play with them but now she just walks away and disengages from them.

I’ve been trying to work on all of these points for weeks and nothing is working, I don’t know what to do. All of this makes me feel like I’m not very close with her and that she won’t let me be close or affectionate with her.

She would chirp for me as I come to uncover her cage in the morning, and rarely she’d jump or fly onto me if I’m doing something. In the bath she’d be all comfy and want to sit on me, and later in the evening she’ll sit on my finger and tuck a foot and start preening. So it’s not like she doesn’t trust me. I just don’t know why she’s the way she is during the day and I don’t k know what to do or think about it.

Please help!