Cool game. Currently you do kinda need to get lucky sometimes. It's pretty common to lose without doing anything wrong atm.
You could make it easier by giving more time,
or reduce the randomness by doing what most modern tetris does, altering the balls you decide to drop,
or you change losing by making you fail if you mess up a cone and then delete the timer and maybe make it a bit harder to dodge unwanted balls.
Still a very fun game, with risk-reward everywhere and all that