Mongodb – How to add user profile picture in schema

I have to develop an application in which the user has a profile picture in his schema. I am using gridfs (MongoDB). how can I access the specific picture of a user? if I upload a picture it will show on every user profile how can I make it unique?

// This is my user schema I want to add a profile picture here but I don’t know how to do it?

const Joi = require('joi');
const mongoose = require('mongoose');
const config = require('config');

const User = mongoose.model('User', new mongoose.Schema({
    name: {
        type: String,
        required: true,
        minlength: 5,
        maxlength: 50
    },
    email: {
        type: String,
        required: true,
        minlength: 5,
        maxlength: 255,
        unique: true
    },
    password: {
        type: String,
        // required: true,
        minlength: 5,
        maxlength: 1024
    },
    isVerified: {
        type: Boolean,
        default: false
    }
}));

//This is my post image API I am using gridfs as a middle ware in it

const uploadFiles = async (req, res) => {
    try {
      await upload(req, res);
      console.log(req.file);
      if (req.file == undefined) {
        return res.send({
          message: "You must select a file.",
        });
      }
      return res.send({
        message: "File has been uploaded.",
      });
    } catch (error) {
      console.log(error);
      return res.send({
        message: "Error when trying upload image: ${error}",
      });
    }
  };

//Gridfs middleware code

const util = require("util");
const multer = require("multer");
const { GridFsStorage } = require("multer-gridfs-storage");
const dbConfig = require('../config/db')

var storage = new GridFsStorage({
  url: dbConfig.url + dbConfig.database,
  options: { useNewUrlParser: true, useUnifiedTopology: true },
  file: (req, file) => {
    const match = ["image/png", "image/jpeg"];
    if (match.indexOf(file.mimetype) === -1) {
      const filename = `${Date.now()}-image-${file.originalname}`;
      return filename;
    }
    return {
      bucketName: dbConfig.imgBucket,
      filename: `${Date.now()}-image-${file.originalname}`
    };
  }
});
var uploadFiles = multer({ storage: storage }).single("file");
var uploadFilesMiddleware = util.promisify(uploadFiles);
module.exports = uploadFilesMiddleware;

//Image get API request

  const getListFiles = async (req, res) => {
    try {
      await mongoClient.connect();
      const database = mongoClient.db(dbConfig.database);
      const images = database.collection(`${dbConfig.imgBucket}.files`);
      const cursor = images.find({});
      if ((await cursor.count()) === 0) {
        return res.status(404).send({
          message: "No files found!",
        });
      }
      let fileInfos = [];
      await cursor.forEach((doc) => {
        fileInfos.push({
          name: doc.filename,
          url: baseUrl + doc.filename,
        });
      });
      return res.status(200).send(fileInfos);
    } catch (error) {
      return res.status(500).send({
        message: error.message,
      });
    }
  };

//Routes

router.post('/upload', uploadFiles);
router.get('/files', getListFiles)

Images are stored in the image bucket and also I can get them too but I do not know how to get them as a user-specified image.