The idea to "skillfully die" fits very well the "failure is progress" theme. I liked the possibility to reset the level at any time, but i do not understand why falling down between the pillars makes the level fail instead of generating a body that i can jump on and makes the idea only applicable to spikes, which is cool, but then i would eliminate the "holes" in between pillars to make the idea more consistent. I liked it, Well done!
I also used music from Kevin MacLeod in my game, he is great!
Check it out https://axiom-gamelabs.itch.io/my-little-fishes