Good evening, thank you very much for you feedebeck.
Regarding the game crashing after the minigame, it was an error in calling the main scene after the minigame. I put "Main" but the correct path would be "main", and when I transform it to HTML, there is this problem, but I left a link below in a comment i made of the game without this error, in case you are interested in testing it.
Regarding the polish, we really need to improve, thank you for the feedebeck, this is the first gamejam we have participated in and the first game we have actually made.
Regarding the visuals, we thought the idea of the pixel art was cool, to bring back that idea of the first Pókemon games, and unfortunately we had to use IA for the art because time was limited and we don't have much drawing skills.
Once again, thanks for the feedebeck