this game is very easy to handle without spending any money.
seriously in 1 day i had full economy build and did enough quests, to buy protection with influence points if needed (although i never had to buy it since i have never been attacked yet)
within 1 week i had my village complete, and 2 huge armies ready to pvp/ siege AI with no problem.
maybe you had bad luck, and someone attacked you before you understood the game.
start over, nothing happened.
small Tip: while you don't have your walls finished, you can't be attacked from other players.
take it to your advantage.