Updating google cache
Thankfully, senior XDA member mohamedrashad has shared a list containing the Google Play Store downloads and update issues as well as the fix for each particular issue. Reboot the Android device, then add the account once again.
Therefore, delete unnecessary applications and files. Restart the smartphone in recovery mode by pressing Volume Down, Power and Home buttons (for Samsung devices) or, Volume Down and Power buttons (for other devices).
In recovery mode use the Volume keys to navigate to wipe cache partition.
This method is only suited for small sized apps and games.
For larger updates, use wi-fi network in order to save data charge.
(Ensure that you uncheck important files that are detected as junk files by Cleanmaster)Method 3: When all fails back up all your apps and data and Factory Reset your device.