Trying to filter an object in javascript using lodash

I have some data like this, it’s more complex than this but this is the basic structure.

    {
        "AUDI": {
            "Id": "3",
            "Name": "AUDI",
            "Models": {
            "A1": [
                {
                "Model": "A1",
                "TransmissionName": "Manual",
                "FuelTypeName": "Petrol"
                },
                {
                "Model": "A1",
                "TransmissionName": "Manual",
                "FuelTypeName": "Petrol"
                }
            ],
            "A3": [
                {
                "Model": "A3",
                "TransmissionName": "Manual",
                "FuelTypeName": "Petrol"
                }
            ]
            }
        },
        "BMW": {
            "Id": "6",
            "Name": "BMW",
            "Models": {
            "1 SERIES": [
                {
                "Model": "1 SERIES",
                "TransmissionName": "Manual",
                "FuelTypeName": "Diesel"
                },
                {
                "Model": "1 SERIES",
                "TransmissionName": "Manual",
                "FuelTypeName": "Petrol"
                }
            ]
            }
        }
    }

I’m trying to filter the object down using a number of possible variables.

This is the code I’ve got so far:

    const newObj = _
    .chain(o).pickBy((o) => {
        if (makeId != null) {
            return o.Id == makeId // Corresponding to the Id value
        } else {
            return o
        }

    }).forEach((o) => {
        if (model != null) {
            return o.Models.Model == model // Corresponding to the Model value within the Models array
        } else {
            return o
        }

    }).value()

The first bit works (IE the Make selection), and I know I’m doing something fundamentally wrong on the .forEach part, but it just keeps returning the whole of the Make object, IE all the AUDIs or all the BWMs.

I would like to then be able to go on and filter by Model EG. is it petrol, is it a manual etc.

Would really appreciate some pointers please. Been trying to get this to work all day.

Thanks.