SHazel, I understand your frustration...
In a game where strategy is the key element to success, one doesn't expect luck to play a key factor. But it does. One's initial random placement on the board affects the entire outcome of a game.
Your specific boosts determine how efficiently you can lay out your city. Also, if you look at the Wiki, you'll see that different boosts score differently - for example, planks score higher than marble in Elven cities. You can look up the Human buildings to see how yours compare.
For the long game, you could look at high ranking players who have all three of your boosts and see the strategies they've applied. If you want to maximize your score you can consider emphasizing your scoring options, and always optimize layout based on the fewest roads possible. If you enjoy the game, it's fun to practice variant layout schemes along the way. I enjoyed getting an expansion and refining the best possible layout options for my boost combination.