Thanks a lot for trying my game out!
The collision problem is a tough one, I've seen that one before, but I always could get out of it by walking/jumping. So I didn't found it crucial. But thanks for the suggestion!
The sword/knife is intended to be a little risk/reward. Though the main reason why it's so short is to prevent to attack through obstacles that are behind a block. Perhaps I can find a way around it.
Been able to restart right after dying is a good idea! I'll look into that.
Most of the background objects are sprites, so they're not designed to be interactable, it would make more sense though considering the red flower is around the same size.
Noting down all of these to look into it, huge thanks for the feedback!