Very polished game with interesting interactions! Turning playing cards into a puzzle game is a brilliant idea, I think you should consider making this into a tabletop game, or make a rulebook so people at home can play using their own playing cards! Planning out the jumps feel satisfying and is easy to understand because everyone is familiar with suits and numbers. I think the instructions in the beginning can be improved a little more, as I wasn’t sure how the character actually jumps consecutively - especially if the player sets up more than 1 possible direction to jump to. Because of this ambiguity, I had the initial misunderstanding when being told I could set up multiple jumps, I thought it had more to do with jumping over existing platforms. Speaking of which, because the player can’t jump over existing platforms, it’s a trap! Even with the leaderboard, it’s not inherently clear that this game’s objective is just to earn score - one might think that they may fail if they do not collect enough food. So I think you should let the player know that food just gives points, they are not the objective of the game.
Lastly, I’d just like to point out that I personally don’t find a lot of engagement in solitaire-like games because of the lack of variety and complexity in player action, but I know other people who do love games like this (which is why I recommended making a tabletop ruleset for this game). I did enjoy the game for a bit, and I think it’s an awesome concept!