hi I can help with 2d art and sprites (potentially UI art as well) I mainly draw character designs but I can draw most things with a bit of trial and error. I love your idea and would love to help if you want.
Here's my art instagram for a brief idea of my artstyle
https://www.instagram.com/rhine_the_artist?igsh=MWJmMDU2N3JucDJyOA==
my discord is @rhine_living_life
Feel free to shoot me a message either here or on discord or on instagram but instagram has been difficult with dms lately so preferably here or discord.
(Also though I'd mention this but I have a tiny bit experience when renpy and I did learn coding so theres that.)