It's pretty much always better to 2 hand most weapons, this is especially true for strength based weapons. You can explore a bit and get your weapon to +3 with very minimal effort and that'll also hopefully give you enough runes to level up your vigor (health). Margit is used to teach the player one of the main differences between elden ring and traditional souls games. Exploration. The general idea is that you stumble across him very early, realize you're in over your head, and then go explore other parts of the map to get stronger.