I think you are on the right track and definitely no offense meant or anything. I think the key is figuring out what type of game you want it to be, that way you can lean into that gameplay more. I think that will help slim down the tutorials and give you a better angle on which mechanics are good to work on. I think it could work well for a card, strategy, or puzzle game so it really comes down to what you personally like and have the most ideas for.