Firstly, Android smartphone users use Google Drive a lot, because of the 15GB free cloud storage
Apart from this, Google Drive is very optimized for Android, so it is easy to upload and download data in it.
Google's tight security and features make Google Drive better and more secure cloud storage.
Google's trust, people have so much trust in Google that their data will always be safe with Google.
The premium subscription price of Google Drive is affordable as compared to other companies.
The reason why Google Drive is the best is that it has a lot of useful features and a simple user interface.