I am using Firebase 8.10.0 with Vue js 2.6.14

I am trying to query in Firestore about the documents that are less than 3 km away from my location And discovered that I could not do this query in firestore, I was frankly disappointed Then after watching a video by Frank van Puffelen on YouTube "Querying Firebase and Firestore"1 I understood that the best way to do this query is through Geohash So now I'm using ngeohash to convert lat long to geohash code then geofirestore to query ( i am not using geofirestore to add the data to firestore because i don't find a way to add doc with specific id or update an existing doc with geofirestore )

convert lat long to geohash code

import geohash from "ngeohash";

const ask = async () => {
  try {
    const loc = await new Promise((resolve, reject) => {
      navigator.geolocation.getCurrentPosition(resolve, reject, {
        enableHighAccuracy: true,
      });
    });
    const { latitude, longitude, accuracy } = loc.coords;

    return {
      lat: latitude,
      lng: longitude,
      accuracy: accuracy,
      geohash: geohash.encode(latitude, longitude)
    };
  } catch (err) {
    console.log(err);
  }
};

add data to firestore

ref.set({
  g: {
    geopoint: new db.GeoPoint(lat, lng),
    geohash: geohash
  },
  ...data
}, { merge: true }).then(() => {
  console.log("Done");
});

query from firestore

let query = geocollection.near({ center: new db.GeoPoint(lat, lng), radius: 3 });
query.get().then((data) => {
  console.log(data.size);
});

Is what I'm doing right is this the best way to query by location in firestore? and does geofirestore increase the number of readings because I made a query a while ago and the result was only 5 from 1000 documents, but I found that more than 60 readings were recorded in the Firebase console. Is this normal or was it only supposed to be 5 readings?