What are the basics elements of yoga that make the practice a mind body approach?

I am a newcomer, and looking for a way to align my mind and my body or trying to use yoga as a somatic tool (as in releasing trauma (not strictly only release but it’s why I took an interest in yoga)

I heard the basic elements were breath with movement, when struggling in a pose using your breath to release tension made by being in the pose, setting gaze to focus your attention.

I would like to build an effective yoga practice, and would like to learn the basics so I am not just going through the motions and engaging my mind and body durning my practice.

If you had any videos, books, or any comment would be helpful.