How can I regain creativity?

A bit of a follow-up to that old post: https://www.reddit.com/r/hyperphantasia/comments/1ak5oez/i_miss_my_creativity_and_imagination/

I was thinking that if I gave myself space and time to heal, things would improve, but ostensibly, nothing has changed in one year.

I thought back on 2022-2023, when I was doing on and off visualization training to see what I could get. It has never made any difference in my visual quality, but I thought back on the way it felt.

It felt... forced. Like, every time, I was making myself visualize stuff. It tended to always be the same kind of stuff, because I had no idea what to do. It felt boring and unrewarding.

To quote someone I've talked with back then:

The mind of a child holds few self imposed limiters and simply looks at what is around it. It sees the imagined castle and decides oh, this is quite the adventure!

In this example, my mind sees the imagined castle, and... yeah, cool? It's just a fake, imaginary castle. I don't even know what to do in there. Sure I could imagine stuff, but... so what? It's all fake, and a very poor visual rendition at that. I feel no emotional attachment to it. It'll be gone the moment I have to do something more important anyway.

The only moment I feel some immersion in imaginary visuals is when my mind decides to imagine negative stuff -- typically going over any negative memory and imagining even worse versions of it. I experience negative emotions from it, but that's emotional attachment nonetheless, and it gives me some degree of immersion.

I don't know. I've tried several ways to feed my imagination and nothing seems to make a difference.

Can I even regain some creativity? I feel I'm a lost cause at this point. Obviously I have a fascination for hyperphantasia, and for imagination in general, and I'm bad at giving up, but... yeah.