How to use MongoDB.Driver with c# in Unity (Both PC and Mac)

Hello all!
I am trying to a new project using Unity and MongoDB Atlas (Both PC and Mac)
I would like to know if somebody can help me. I would like how to connect the MongoDB.Driver with Unity both PC and Mac.
Also seems that many others use Realm to do this? Is this mandatory? I would like to use MongoDB package and if possible try to avoid Realm.
Thanks a lot! ( Its my first post :))