My question Dan browns books tend to paint gnostics as ceremonial magic/Mary Magdalene worshippers this is incorrect? Also is Sophia a goddess in your beliefs or a symbol of wisdom?
Dan Brown’s book is fiction, so it’s depiction of Gnosticism is largely meant to entertain, not to teach.

In my own Church, we do see a certain ceremonial magical aspect to the liturgy, especially the Eucharist – more specifically this would be theurgy, as we invoke God and make Him present on the altar. But ceremonial magic isn’t emphasized in the Church.
Mary Magdalene is one of the most, if not the most, important of Jesus’ disciples. She had a very special relationship with Him and understood Him better than the others, often to the frustration of the other apostles. She isn’t worshiped though, she’s venerated just like any other saint. If I remember correctly, Dan Brown depicted her and Jesus as married and having children together, which is not something Gnostics would believe. Gnostic scripture does say Jesus would kiss her often, and even refers to her as His consort (which could have various different meanings), but there’s no indication that they were married. It’s just part of Brown’s fiction.
Sophia isn’t so much a goddess but She’s not just a symbol either. She’s an Aeon – an emanated aspect (hypostasis) of the Father. “Goddess” tends to imply, in modern terms, a female counterpart to God; but since She is literally an aspect of Him, “Goddess” seems to be incorrect. But if by, “goddess” you mean a divine reality who happens to be identified as feminine, then I guess you could call Her one. While She has a very special place in Gnosticism, I’d suggest reading the Wisdom literature in the Bible to get a sense of what She is.