It could be an XY problem, to make a game you would need a coding skills. I would consider joining a team in a game jam as an artist if you have 2d or 3d skills or as a sound guy if you like making music. A short deadline would make for lack of long term motivation. Other people would help you out in things where you lack necessary skills. Designing a board game could be a good alternative. If you like writing, making a gamebook would also be a possibility.