Can I ask if other people care about the game you’re making? As someone with a fair amount of indie experience it seems easier to create a proof people care about than a (even reasonably) popular video game.
It is too early to tell for my current project. I know that it is very hard to create a successful game. Certain genres are more crowded than others though. Creating a successful 2D platformer is almost impossible nowadays for example. I am creating a grand strategy game. It is a niche where the supply and demand dynamics is reasonable, but it is still hard to create something successful.