Hello!
We're glad you're interested in trying Flamebait Dating Sim! Unfortunately, it's hard to know what's going wrong when we don't know what OS you're using or what kind of hardware you have. A likely first step to solving these sorts of problems can be by updating your graphics card drivers, so that is a good place to start. If that doesn't help, there are further things you can check on. We recommend checking this page on common problems when launching Ren'py, the engine we used to make the game.