How to design the Schema of monggoose in the node js/express js

 const productSchema = new mongoose.Schema({

    _id:ObjectId,

    catagarie:[{

        catagariename :{type:String},

        products:[{

            productname:{type:String},

            productprice:{type:String},

        }],

    }]

})

const Products = mongoose.model('product',productSchema);

const PPSchema = new mongoose.Schema({

    // name : {type:String,required:true},

    name : {type:String},

    shopname : {type:String},

    phonenumber : {type:String},

    secondarynumber:{type:String},

    email : {type:String},

    dealer:{type:String},

    about:[{

        data:{type:String},

        disc:{type:String}

        // type:String

    }],

    userimg :{

        data:Buffer,

   

    },

    usershopimg : {

        data:Buffer,

   

    },

    product:[{

        catagariename :{type:String},

        products:[{

            productname:{type:String},

            productprice:{type:String},

        }],

    }]

})

const Userid = mongoose.model('userid', PPSchema);