Learn about the MongoDB logical $or operator in my blog post here.

The $nor operator is syntactically like $or but behaves in the opposite way.

The $nor operator accepts multiple conditional expressions in the form of an array and returns documents that don't satisfy any of the given conditions.

const query = async () => {
  const result = await Product.find({
    $nor: [{ brand: "Sony" }, { brand: "Sennheiser" }],
  })

  console.log(result)
}

query()

This query will match and return all the products that neither belong to the brand Sony nor Sennheiser.