Congratulations that you finished your first game :)
It's a nice simple game and I like that you added some things like the fireball to the Flappy Birds game loop.
The visuals look good but the different artstyles don't fit together so well, Most of the game is pixelart, but the buttons are not.
Clicking the fire ball button makes sense for mobile, but on PC it feels a bit akward combined with space for flying.