If they're bugs, they shouldn't be left in. Ever. You're trying to make your game artificially challenging, which is a bad-faith move. If you want your game to be hard, do it with challenging level design. Saying you "left the bugs in deliberately to make the game more difficult" is a fancy way of saying "I suck at programming, so I'll say it's intentional and hope nobody calls me on it."
Get better at making games, then submit them.
There is a lot of room for improvement here. Considering this is one of your very first games, I'll give you one star. The game has many bugs, and the idea isn't very original. One very annoying bug is that the player randomly gets stuck and has to jump to move again.