Sure, Cognitive Behavior Theory can work really well for some people but I fear the phrase "evidence based" is a bit of over-hyped in a field with a major reproducibility crisis. Again, it can be perfect for the right person but it is not a silver bullet.
Especially for some people with PTSD it might not work that well or even be contra-productive.
So if you feels like CBT is not working for you, maybe give psychoanalysis a shot. There is more to it than Freud anyway.