I see. It is really unfortunate that you found it too hard to finish. We had a lot of friends play the earlier version of this game and made adjustments to the controls based on their feedback. Even then the there weren’t many people that just gave up without finishing.
If I may ask, what would make the controls easier for you? For sliding, you can slide after a bounce so that you get more time to press left/right before you land. Also, some players commented that switching from Arrow keys to WASD or vice versa made the game way easier than before so I recommend giving that a try.