I suppose for me, scamming is a kind of criminal thing where someone has set out to take advantage of someone else, steal from them, etc.
A more compassionate way to look at some of these things could be that you have been hurt and harmed by other people's deficiencies and mistakes. That's still very painful for you and very unfortunate, but the difference could be that the others did not set about all they did with the plan and the sole intention of harming you for their own gain.
For example, perhaps some of the therapists were well-meaning people who entered the profession because they thought they could help people and wanted to help people, but unfortunately the kind of therapy they were taught at school is one that is not actually helpful for people in your kind of situation. So I'm not saying it's not their responsibility at all, but I am saying maybe they didn't do all their training and learning with the deliberate intention of finding out how to hurt people. Even if that was still the unfortunate consequence.

It's hard to know why bad things can happen to us sometimes isn't it, especially if they don't seem to happen to other people around us. I am sure though that it is not because you are an unacceptable person! I think you've been unfortunate in these things. Perhaps the flip side of that is that you have come through them with great strength and perseverance?