itch.io

Just level up. And fight  flowers/plants in the first area to get enough healing items.

If you're really struggling, then restart the game, and after you get Pike, just grind up until you've maxed healing items in the first dungeon, as the flower enemies will give you healing items, and another will give you magic restoring items. 

Also, there's a statue you can save at that's broken in the first dungeon, I think it heals you up? Not 100% sure.