I mean I think that some of them could have saved themselves or it was their fault.
Laura from 26 was in a majority alliance, but was so bad at comps that they voted her out. Strategically, she was decent, but even in the majority alliance she was voted out.
Alexis from 28 almost made the merge and litterally just had to work with the other beauties and she could have made the merge.
I do agree that Tracey just didn't have luck on her side. I feel the same way about Matt from 26, Marissa from 27, Spencer from 18 and Kristina from 22. But specifically Alexis and Laura could have saved themselves.
