This is cool! I'm liking the Character Controller on this one. It is responsive enough and it feels like it's my fault if I miss a jump although maybe you can control the height or just the flow of it, Hard to explain - something like fast slow then fast again when dropping down but other than that the initial foundation for a platformer feels solid.
You might also want to try and use a Cinemachine camera for a much smoother camera follow, It will help alot. I like the graphics are great! Keep it up!