Hey! Lots of little things like getting used to bumping the ball (with 3 or K) when it might be falling in a way that leads to the hole. You can also buy the SAVER at the vending machine, or get it for free after movies/beach, to keep you alive when you'd die otherwise.
It's definitely a tricky game, and hard for me to judge how difficult it is after so much playstesting haha. I promise practice will reward you, if you're enjoying it :)