No worries, your english is great! Thanks for the nice feedback on my game. Yes, the art wasn't done by anyone else.
The issue you mention about the art matching with the main character's hair color, I'm aware of it, but it couldn't be done.
Right now I'm developing the 2D version of this game, because I wanted to give 2D a try and the codebase of the text game was very big. Give it a try if you want https://sugarmint.itch.io/malevolent-planet-unity