Android FusedLocationProviderClient.requestLocationUpdates() returning same location coordinates

I found two types of question like this one on SO, but both have no answers.

I'm using FusedLocationProviderClient to get the location of my device. I've lunched a background service to get the location using requestLocationUpdates().

Even when the application is in foreground, the returned latitude and longitude of the methods aren't changing.

Here's a snippet of how I'm using the class:

private FusedLocationProviderClient fusedLocationClient
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
fusedLocationClient.requestLocationUpdates(new LocationRequest(), locationCallback, Looper.getMainLooper());

locationCallback is just a method which will print the Longitude and Latitude on the console.

All permissions are granted and I'm checking for the permissions in my manifest. Here's the permissions I've added:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application
    android:name=".App"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:usesCleartextTraffic="true"
    android:theme="@style/AppTheme">
    <activity android:name=".HomeActivity"></activity>
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <service android:name=".LocationService" />
</application>

LocationService is the service where I'm trying to get the location.

Anyone have an idea where's the issue?? I've been stuck for hours!

You should listen for location updates if you want to have changes.

https://developer.android.com/training/location/request-updates

Or it will return all the time the same last known location if no app asks for location updates.