Shame that stems from trauma often tells us that it was our fault, we were to blame, we are inherently bad... It's usually about self worth.
One reason survivors believe trauma was their fault or happened because they were inherently bad because it's a way to make sense of it, to have a sense of control or at least that A plus B = C. Bad things are happening to me, I can't stop them, therefore I must be inherently bad.
The real truth is that trauma happens and it is out of our control and it is not because we were inherently bad.
Guilt motivates us to change, go a different way. Shame silences and shuts down connection with our true authentic selves and that with other people. During trauma, shame can be a way we try to reduce our vulnerability to being hurt while the trauma is happening.
I have read that shame can be anger turned inward on ourselves in a very non-verbal way. The idea is that as we learn to put the blame were it should be and process the anger, the shame will begin to lift.
One of the ways I have discovered to work with shame is to talk, and keep talking and sharing what triggers feelings of shame (which as others have explained is so different than guilt), and discover and experience others accepting me, being safe towards me, and places like this forum, that people I don't see as shameful, can relate to my expenses and have often been through similar experiences.
There are other times where I identify shame and endure it like a cold: it a feeling, a physical sensation, and a cause for good self care and not running and hiding (which is what is usually want to do.)
You are beginning the process of breaking down shame even now. By even asking how to resolve shame, you are beginning to counteract the silence, the emotion, and messages of shame. You are beginning to say your abusers were wrong. You are of great value. You do have a right to recover and not be stuck in horrible experience of feeling shame. You do not deserve to feel this way.
I hope you find ways to find relief from the experience of shame. I find it to be pretty awful to deal with myself.