This is a cool game. Congrats on getting it uploaded to Itch!
I agree that the death sound is way too loud. but also, the game waits for the sound (which is relatively long) to finish before respawning. Because it's a "rage platformer" (at least I'm assuming it is and you're expecting players to die a lot), it really would benefit the game design to make the respawn fast. I was frustrated after falling, and then moreso when I'm waiting three and a half seconds to respawn at the bottom of the pit.
Other than that man I thought the controls were fine. You did a good job introducing them at the start.
Ubiquitous plug to playtest my game. I already implemented a ton of feedback: starboardbowgames.itch.io/spinsanity