Mongo-go-driver nested query golang

Question

I used to have two filters to get data from my mongoDB, however I do not think that it is efficient considering it has to do two queries to the DB.

    filter = bson.M{
        "$and": []bson.M{
            {"partnerA.id": id},
            {"unlocked": false},
            {"deletedAt": nil},
        },
    }

    filter = bson.M{
        "$and": []bson.M{
            {"partnerB.id": id},
            {"unlocked": false},
            {"deletedAt": nil},
        },
    }

I tried to combine them using this solution I found and came out with this filter:

    filter := bson.M{
        "$and": []bson.M{
            {"partnerA.id": id},
            {"unlocked": false},
            {"deletedAt": nil},
        },
        "$or": bson.A{
            bson.M{"$and": []bson.M{
                {"partnerB.id": id},
                {"unlocked": false},
                {"deletedAt": nil},
            }},
        },
    }

However it does not work and I can't find the solution for it. Does anyone see the problem for this?

Thank you.