It’s not easy being a strong woman on “Survivor.” Savannah Louie has been labeled a “mean girl” by some of the other contestants and the fans for her aggressive gameplay on “Survivor 49” — but fellow castaway Alex Moore is coming to her defense. “Everyone is entitled to their own opinion. I’ll say, I personally do like Savannah. We had a good relationship,” Moore, who was voted off on this week’s episode, exclusively told The Post on Thursday.