I realize this is intentionally a rage game, but I would look into lessons of your kaizo marios and meat boys and celestes of the world - making the hitboxes generally smaller than the sprites, so that the game looks more oppressive than it is, rather than being more oppressive than it looks; giving the player more degrees of movement precision, so that nailing an angle feels more intentional and less random. But of course it's all subjective so I get if this is the game you wanted to make 😉