Man, I'm sorry that you're having to go through this. It's incredibly distressing when it happens, but I'm sure the buyers would've understand, if not, they can go frick themselves.
I believe that's a part of my issue, I was able to think of one thing, and then come up with either one scenario, then have that played out in my mind until it ran its course and move onto the next one, or move backwards to play new scenes or play multiple scenarios at once to figure out the best one, going back and forth as I pleased. In conjunction, I was previously able to ask questions, ask why, see patterns, think of new tings to combine together, etc and they were normally very novel and fun imo (albeit my knowledge was limited in retrospect)
Now, my mind draws either a blank or only think of things that I've already seen or read.
(Maybe trigger warning below, mentions of toxic family, abuse, grief, etc)
It being related to self confidence would make sense, since I escaped a toxic household, suffered abuse, lost 75% of my family, lost a friend and had a major depressive episode. Ever since the incident with my friend, alongside loosing my ability to think, talk, write and draw properly (or more accurately, my abilities pre depressive episode) I've lost self esteem, self confidence and self worth to name a few things that've been affected.
That's a great idea, you never know what things you'll notice or think of when you're having fun, exploring new things! I have no doubt you'll feel that creativity in no time!
Oh, also, I've learnt that dopamine is what allows us to be creative! A very short while ago, I started taking anti psychotics for my severe anxiety and while I was able to resume a more functional life, my already severely impacted abilities like creativity became non existent, so now, while I'm functioning, my words, writing, even thoughts are just being recycled even more. Tbh, I would rather have such severe anxiety but be able to be creative and have all my other abilities return to normal than be functioning like this.