This post doesn't go into a lot of specific detail, so what I have to say might not actually be all that helpful to you specifically, but I felt like throwing it out there anyway, as this was something that would have helped me a lot back when I was struggling with my own AD:
You obviously have to take responsibility for treating your own anxiety, but that doesn't mean you're to blame if that 'treatment' doesn't go entirely well.
Unlike the vast majority of problems in life, a social anxiety disorder is not a type of problem one can simply solve by themselves. It takes the active involvement of other people, some of which are simply NOT going to act in the best interest of helping you with your body's chemical dysfunctions.
I.E. a therapy group is a good place to get exposure therapy for an AD, whereas a job in the service industry definitely isn't.
People will often claim that doubling down on human interaction is the key to treating social anxiety, but that isn't actually the case.
POSITIVE social interaction is the key to treating social anxiety, and that is a two-way street for which you can only ever be responsible for your side of the equation.
If the people you interact with treat you poorly (which is sadly just the norm in many professional situations) your anxiety is not going to improve, it's often going to get worse, because avoiding those situations is exactly what social anxiety evolved to help you do in the first place. This is why treatment for social anxiety is best done in a closed, emotionally-healthy environment. You have to learn to tolerate positive environments BEFORE you can learn to tolerate negative ones.
Just remember to treat your anxiety for what it is: a natural set of bodily sensations. Don't get hung up on yourself when it spikes out of your control, just acknowledge it for what it is.
Best of luck! <3