Simple game, I dont know if there's an end, or if its endless cuz it seems handcrafted but ill say the game feels a bit slow and it really tested my patience when I had to retry.
Here's some ways I think you can improve: faster movement, bigger firefly collecting hitbox.
But for the good stuff I like that the frog is portrayed as a giant beast in your perspective, very thrilling when it first appears. Sound design and the little rotations when moving felt very satisfying.
Good job with the game!